INTERRUP_A.pdf - Firmware Encoding Index

D:\D\inter61a\INTERRUP.A 

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Interrupt List Release 61 Last change 16jul00 

http://www.foxitsoftware.com For evaluation only. 

Copyright (c) 1989-1999,2000 Ralf Brown 

--------!---FILELIST------------------------- 

Please redistribute the following files unmodified as a group, in a quartet of 

archives named INTER61A through INTER61D (preferably the original authenticated 

PKZIP archives): 

INTERRUP.1ST the read-me file, containing credits, availability info 

INTERRUP.A INT 00 through INT 10/BE \ 

INTERRUP.B INT 10/BF through INT 15/0F\ 

INTERRUP.C INT 15/10 through INT 15/E7 \ 

INTERRUP.D INT 15/E8 through INT 1A/B0 \ 

INTERRUP.E INT 1A/B1 through INT 1F \ total 2520 pages at 

INTERRUP.F INT 20 through INT 21/43 \ 60 lines per page, 

INTERRUP.G INT 21/44 through INT 21/5E \ 2684 with INTPRINT -p 

INTERRUP.H INT 21/5F through INT 21/E2 >(8754 entries) 

INTERRUP.I INT 21/E3 through INT 21/F1 / (4135 tables) 

INTERRUP.J INT 21/F2 through INT 25 / 

INTERRUP.K INT 26 through INT 2F/15 / 

INTERRUP.L INT 2F/16 through INT 2F/79 / 

INTERRUP.M INT 2F/7A through INT 2F/D9 / 

INTERRUP.N INT 2F/DA through INT 50 / 

INTERRUP.O INT 51 through INT 61 / 

INTERRUP.P INT 62 through INT 6A / 

INTERRUP.Q INT 6B through INT 91 / 

INTERRUP.R INT 92 through INT FF / 

INTERRUP.PRI a brief introduction to interrupts 

INTPRINT.COM a simple formatter that also generates a list summary 

INTPRINT.DOC instructions for INTPRINT 

OVERVIEW.LST brief listing of major uses of each interrupt 

86BUGS.LST a listing of CPU bugs and undocumented features 

BIBLIO.LST bibliography of information sources for the list 

CMOS.LST a description of the CMOS RAM data bytes 

FARCALL.LST APIs available through FAR CALLs 

GLOSSARY.LST a glossary of terms, abbreviations, and acronyms 

MEMORY.LST format of the BIOS data area 

OPCODES.LST a listing of recent and undocumented CPU instructions 

PORTS.A a listing of I/O ports 0000h-013Fh 

PORTS.B a listing of I/O ports 0140h-0AD5h 

PORTS.C a listing of I/O ports 0AD6h-FFFFh 

CATEGORY.KEY descriptions of divider-line category letters 

COMBINE.COM combine the pieces of the list into a single file 

Saturday, January 08, 2011 11:31 AM 

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COMBINE.DOC documentation for COMBINE 

The following files should be distributed in an archive called INTER61E: 

86BUGSnn.ZIP programs to test for CPU bugs 

COMBINE.ASM source code for COMBINE.COM 

INT.* invoke interrupts from commandline 

INTHLP??.ZIP Interrupt Helper viewer for the interrupt list 

INTLIST.E Epsilon extension for handling list 

INTPRINT.C source code for INTPRINT 

INTSUM??.ZIP interrupt list browser (Interrupt Summary) 

IVIEW*.ZIP another interrupt list browser 

Finally, the following should be distributed in an archive called INTER61F: 

INT2RTF.ZIP Slava Gostrenko's Windows Help converter 

INT2WHLP.ZIP convert list into Windows Help database 

INTERRUP.ICO icon for interrupt list 

HINTSRCH.ZIP WinHelp DLL for full-text searches of interrupt list 

IL2ME???.ZIP convert list into Multi-Edit help database 

INT2GUID.* convert list into TurboPower GUIDE or POPHELP database 

INT2HLP.ZIP convert list into QuickHelp database 

INT2IPF.ZIP convert list into OS/2 .IPF database 

INT2QH.* program to convert list into QuickHelp database 

INT2TPH.ZIP convert to Turbo/Borland Pascal help file (.TPH) 

INTHELP.* convert list into TurboPower GUIDE database 

RB2NG???.ZIP convert list into Norton Guides database 

WH_ED*.ZIP WinHelp-file editor 

--------!---CONTACT_INFO--------------------- 

If you notice any mistakes or omissions, please let me know! It is only with 

YOUR help that the list can continue to grow at the current rate. Please send 

all changes to me rather than distributing a modified version of the list. 


Please read the file INTERRUP.1ST before asking me any questions. You may find 

that they have already been addressed. 

Ralf Brown 

Internet: ralf@pobox.com (currently forwards to ralf@telerama.lm.com) 

FIDO: Ralf Brown 1:129/26.1 

or post a message to me in the DR_DEBUG echo (I probably won't see it 

unless you address it to me) 

I reply to all e-mail submissions, but some of my replies bounce because of 

bad return paths. If you don't get a response from me within a reasonable 

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period of time, send it again with a better return path (many mailers are 

improperly configured and do not produce a valid From: address). 

--------!---Note----------------------------- 

See INTERRUP.1ST for the key to system abbreviations and a list of the 

trademarks mentioned here. 

--------!---DISCLAIMER----------------------- 

DISCLAIMER: THIS MATERIAL IS PROVIDED "AS IS". I verify the information 

contained in this list to the best of my ability, but I cannot be held 

responsible for any problems caused by use or misuse of the information, 

especially for those functions not officially documented. If it is marked 

"internal" or undocumented, you should check it carefully to make sure it 

works the same way in your version of the software (and please let me know 

whether or not it works the same way). Information marked with "???" is 

known to be incomplete or guesswork. 

--------!---FLAGS---------------------------- 

The use of -> instead of = signifies that the indicated register or register 

pair contains a pointer to the specified item, rather than the item itself. 

Register pairs (such as AX:BX) indicate that the item is split across the 

registers, with the high-order half in the first register. 


One or more letters may follow the interrupt number; they have the following 

meanings: U - undocumented function, u - partially documented function, 

P - available only in protected mode, R - available only in real or V86 mode, 

C - callout or callback (usually hooked rather than called), 

O - obsolete (no longer present in current versions) 

--------!---CATEGORIES----------------------- 

The ninth column of the divider line preceding an entry usually contains a 

classification code (the entry has not been classified if that character is 

a dash). The codes currently in use are: 

A - applications, a - access software (screen readers, etc), 

B - BIOS, b - vendor-specific BIOS extensions, 

C - CPU-generated, c - caches/spoolers, 

D - DOS kernel, d - disk I/O enhancements, 

E - DOS extenders, e - electronic mail, F - FAX, 

f - file manipulation, G - debuggers/debugging tools, g - games, 

H - hardware, h - vendor-specific hardware, 

I - IBM workstation/terminal emulators, i - system info/monitoring, 

J - Japanese, j - joke programs, 

K - keyboard enhancers, k - file/disk compression, 

l - shells/command interpreters, 

M - mouse/pointing device, m - memory management, 

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N - network, n - non-traditional input devices, 

O - other operating systems, 

P - printer enhancements, p - power management, 

Q - DESQview/TopView and Quarterdeck programs, 

R - remote control/file access, r - runtime support, 

S - serial I/O, s - sound/speech, 

T - DOS-based task switchers/multitaskers, t - TSR libraries 

U - resident utilities, u - emulators, 

V - video, v - virus/antivirus, 

W - MS Windows, 

X - expansion bus BIOSes, x - non-volatile config storage 

y - security, * - reserved (and not otherwise classified) 

--------C-00--------------------------------- 

INT 00 C - CPU-generated - DIVIDE ERROR 

Desc: generated if the divisor of a DIV or IDIV instruction is zero or the 

quotient overflows the result register; DX and AX will be unchanged. 

Notes: on an 8086/8088, the return address points to the following instruction 

on an 80286+, the return address points to the divide instruction 

an 8086/8088 will generate this interrupt if the result of a division 

is 80h (byte) or 8000h (word) 

SeeAlso: INT 04,OPCODE "AAD" 

--------G-00--------------------------------- 

INT 00 - Zenith - ROM DEBUGGER 

Desc: invokes the ROM Debugger when at the BIOS level; equivalent to 

pressing Ctrl-Alt-Ins on booting. 

Note: since DOS revectors INT 00, it is necessary to restore this vector to 

its original ROM BIOS value in order to invoke the debugger once DOS 

loads 

SeeAlso: INT 03"Columbia" 

--------C-01--------------------------------- 

INT 01 C - CPU-generated - SINGLE STEP 

Desc: generated after each instruction if TF (trap flag) is set; TF is 

cleared on invoking the single-step interrupt handler 

Notes: interrupts are prioritized such that external interrupts are invoked 

after the INT 01 pushes CS:IP/FLAGS and clears TF, but before the 

first instruction of the handler executes 

used by debuggers for single-instruction execution tracing, such as 

MS-DOS DEBUG's T command 

SeeAlso: INT 03"CPU" 

--------C-01--------------------------------- 

INT 01 C - CPU-generated (80386+) - DEBUGGING EXCEPTIONS 


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Desc: generated by the CPU on various occurrences which may be of interest 

to a debugger program 

Note: events which may trigger the interrupt: 

Instruction address breakpoint fault - will return to execute inst 

Data address breakpoint trap - will return to following instruction 

General detect fault, debug registers in use 

Task-switch breakpoint trap 

undocumented 386/486 opcode F1h - will return to following instruc 


--------H-02--------------------------------- 

INT 02 C - external hardware - NON-MASKABLE INTERRUPT 

Desc: generated by the CPU when the input to the NMI pin is asserted 

Notes: return address points to start of interrupted instruction on 80286+ 

on the 80286+, further NMIs are disabled until the next IRET 

instruction, but one additional NMI is remembered by the hardware 

and will be serviced after the IRET instruction reenables NMIs 

maskable interrupts may interrupt the NMI handler if interrupts are 

enabled 

although the Intel documentation states that this interrupt is 

typically used for power-failure procedures, it has many other uses 

on IBM-compatible machines: 

Memory parity error: all except Jr, CONV, and some machines 

without memory parity 

Breakout switch on hardware debuggers 

Coprocessor interrupt: all except Jr and CONV 

Keyboard interrupt: Jr, CONV 

I/O channel check: CONV, PS50+ 

Disk-controller power-on request: CONV 

System suspend: CONV 

Real-time clock: CONV 

System watch-dog timer, time-out interrupt: PS50+ 

DMA timer time-out interrupt: PS50+ 

Low battery: HP 95LX 

Module pulled: HP 95LX 

--------m-02----SI0714----------------------- 

INT 02 U - STB RAPIDMAP.SYS - ??? 

SI = 0714h 

ES:DI -> ??? 

Return: ??? 

SeeAlso: INT 67/AX=6100h"STB",PORT 00E1h"STB" 

--------C-03--------------------------------- 


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INT 03 C - CPU-generated - BREAKPOINT 

Desc: generated by the one-byte breakpoint instruction (opcode CCh) 

Notes: used by debuggers to implement breakpoints, such as MS-DOS DEBUG's G 

command 

also used by Turbo Pascal versions 1,2,3 when {$U+} specified 

return address points to byte following the breakpoint instruction 

called by Novell DOS 7 EMM386 after displaying an exception error 

message (GPF, illegal opcodes, etc.) and before waiting for user 

input 

called by QEMM-386 if the user presses 'I' (undocumented) when prompted 

after an exception error message 


--------G-03--------------------------------- 

INT 03 - Columbia PCs (desktop,VP portables) - ROM DEBUGGER 

Desc: invokes the ROM Debugger if INT 03 has not been revectored; equivalent 

to pressing Esc on booting. 

SeeAlso: INT 00"Zenith",INT 03"Realia" 

--------G-03--------------------------------- 

INT 03 - Realia COBOL - DEBUGGER SUPPORT 

Note: Realia COBOL checks for a signature eight bytes prior to the interrupt 

handler when it starts up 

BUG: if the offset of the INT 03 vector is less than 8, the compiler and 

all executables generated by it will crash the system 

SeeAlso: INT 03"Columbia" 

--------G-03--------------------------------- 

INT 03 U - Watcom WVIDEO, Watcom WD - OUTPUT DEBUGGING MESSAGE 

STACK: DWORD selector 

DWORD offset of ASCIZ message to display 

Notes: the INT 03h instruction which invokes the debugger must be followed by 

a JMP SHORT and the signature string "WVIDEO" 

to check whether this interface is available, define a public byte 

variable named ___WD_Present, which the debugger will set to 01h 

before running the program 

SeeAlso: AX=0910h 

--------U-03--------------------------------- 

INT 03 - DTown Utilities - POP UP 

Program: DTown Software Development's DTown Utilities contains various tools 

which are useful to programmers, such as a memory viewer and 

disassembler 

Note: DTU pops up on INT 03 (if not hooked by a debugger) to allow the 

user to inspect memory or code when the machine crashes; various 


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memory managers will invoke INT 03 when displaying a CPU exception 

error message (either automatically or when the user presses a 

particular key) 

SeeAlso: INT 2D/AL=20h"DTown" 

--------G-030000----------------------------- 

INT 03 - Soft-ICE - BACK DOOR COMMANDS - GET Soft-ICE VERSION 

AX = 0000h 

SI = magic value 4647h ('FG') 

DI = magic value 4A4Dh ('JM') 

Return: SI = BCD version (0280h = v2.80) 

SeeAlso: INT 03/AX=0910h 

--------G-0301------------------------------- 

INT 03 - Soft-ICE - BACK DOOR COMMANDS - ??? 

AH = 01h 



Return: ??? 

SeeAlso: AX=0000h,AX=090Bh,INT 03/AH=10h 

--------G-030900----------------------------- 

INT 03 - Soft-ICE v2.80 - BACK DOOR COMMANDS - ??? 

AX = 0900h 



DS:BX -> ??? 

CX = ??? 

DX = ??? 

Return: ??? 

SeeAlso: AX=0000h,AH=01h,AX=0902h,AX=0914h 

--------G-030902----------------------------- 

INT 03 - Soft-ICE v2.80 - BACK DOOR COMMANDS - POPUP & START A DEBUG SESSION 

AX = 0902h 



DS:BX -> initial register values (see #00001) 

Return: registers as specified in initial register values table 

Note: This function is called by LDR.EXE in loading a program to 

be debugged. After executing the function, Soft-ICE pops up its 

debugging window and you may start debugging your program. 

Return: ??? 

SeeAlso: AX=0000h,AX=090Ah,AX=0910h,AX=0914h 


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Format of Soft-ICE initial register values: 

Offset Size Description (Table 00001) 

00h WORD initial value of SP 

02h WORD initial value of SS 

04h WORD initial value of IP 

06h WORD initial value of CS 

08h WORD initial value of DS and ES 

0Ah WORD ??? 

0Ch WORD ??? 

0Eh WORD ??? 

10h WORD initial value of AX 

12h WORD ??? (defaults to 000AH ???) 

14h WORD ??? (defaults to 0001H ???) 

16h WORD ??? (defaults to 0100H ???) 

--------G-030903----------------------------- 


AX = 0903h 



DS:BX -> ??? 

CX = ??? 

DX = ??? 

Return: ??? 

SeeAlso: AX=0000h,AX=0902h,AX=0907h,AX=0914h 

--------G-030907----------------------------- 


AX = 0907h 



DS:BX -> ??? 

CX = ??? 

DX = ??? 

Return: ??? 

SeeAlso: AX=0000h,AX=0903h,AX=090Ah,AX=0914h 

--------G-03090A----------------------------- 


AX = 090Ah 



DS:BX -> ??? 

CX = ??? 




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DX = ??? 

Return: ??? 

SeeAlso: AX=0000h,AX=0907h,AX=090Bh,AX=0914h 

--------G-03090B----------------------------- 


AX = 090Bh 



DS:BX -> ??? 

CX = ??? 

DX = ??? 

Return: ??? 

SeeAlso: AX=0000h,AX=090Ah,AX=0910h,AX=0914h 

--------G-030910----------------------------- 

INT 03 - Soft-ICE - BACK DOOR COMMANDS - DISPLAY STRING IN Soft-ICE WINDOW 

AX = 0910h 



DS:DX -> ASCIZ string to display (max 100 bytes, 0Dh OK) 

Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc. 

SeeAlso: INT 03"WVIDEO" 

--------G-030911----------------------------- 

INT 03 - Soft-ICE - BACK DOOR COMMANDS - EXECUTE Soft-ICE COMMAND 

AX = 0911h 



DS:DX -> ASCIZ command string (max 100 bytes, 0Dh OK) 

Return: nothing 

SeeAlso: AX=0912h,AX=0913h 

--------G-030912----------------------------- 

INT 03 - Soft-ICE - BACK DOOR COMMANDS - GET BREAKPOINT INFORMATION 

AX = 0912h 



Return: BH = entry number of last breakpoint set 

BL = type of last breakpoint set (see #00002) 

DH = entry number of last breakpoint to be triggered 

DL = type of last triggered breakpoint (see #00002) 


SeeAlso: AX=0911h,AX=0913h,AX=0914h 


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(Table 00002) 

Values for Soft-ICE breakpoint type: 

00h BPM (breakpoint register types) 

01h I/O 

02h INTerrupt 

03h BPX (INT 03-style breakpoint) 

04h reserved 

05h range 

--------G-030913----------------------------- 

INT 03 - Soft-ICE v2.5x - BACK DOOR COMMANDS - SET Soft-ICE BREAKPOINT 

AX = 0913h 



DS:DX -> breakpoint structure (see #00003) 

Return: AX = status 

00h successful 

BX = breakpoint number 

03h breakpoint table full 

06h memory limit error 

07h I/O limit error 

09h range limit error 

16h duplicate breakpoint 



Format of Soft-ICE breakpoint structure: 


00h BYTE breakpoint type (see #00004) 

01h DWORD breakpoint address 1 

(lower range limit for memory BPs, 

interrupt number for interrupt BPs, 

address of BP for execution BPs, 

I/O address (only word) for I/O BPs) 


(upper range limit for memory BPs, 

optional value to check for for interrupt BPs, 

overlay number (0 = root) for execution BPs) 


0Dh BYTE breakpoint mode 1 (see #00005) 

(for interrupt BPs = register to check 

00h no value checking 

01h check AL 

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02h check AH 

03h check AX) 

0Eh BYTE breakpoint mode 2 (see #00005) 

0Fh BYTE breakpoint size (00h byte, 01h word, 03h dword) 

10h BYTE breakpoint pass count before program stop 

11h BYTE breakpoint state 

Note: all unused fields should contain zeros 




(Table 00004) 

Values for Soft-ICE breakpoint type: 

00h memory location 

01h memory range 

03h I/O 

04h interrupt 

05h execution break 

(Table 00005) 

Values for Soft-ICE breakpoint mode: 

01h read 

02h write 

04h execution 

--------G-030914----------------------------- 

INT 03 - Soft-ICE v2.5x - BACK DOOR COMMANDS - REMOVE Soft-ICE BREAKPOINT 

AX = 0914h 



BX = breakpoint number (returned by AX=0913h) 

Return: BX = ??? 



--------G-030918----------------------------- 


AX = 0918h 



DS:BX -> ??? 

CX = ??? 

DX = ??? 

Return: ??? 

SeeAlso: INT 03/AX=0000h,INT 03/AX=0910h,INT 03/AX=0914h,INT 03/AH=10h 

--------G-0310------------------------------- 

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AH = 10h 



Return: ??? 

SeeAlso: INT 03/AX=0000h,INT 03/AX=0910h,INT 03/AH=01h,INT 03/AH=11h 

--------G-0311------------------------------- 


AH = 11h 



Return: none??? 

SeeAlso: INT 03/AX=0000h,INT 03/AX=0910h,INT 03/AH=10h,INT 03/AX=130Ch 

--------G-03130C----------------------------- 


AX = 130Ch 



BX = ??? 

CX = ??? 

DX = ??? 

Return: AX = ??? (1300h) 

SeeAlso: INT 03/AX=0000h,INT 03/AX=0910h,INT 03/AH=11h,INT 03/AX=130Eh 

--------G-03130E----------------------------- 


AX = 130Eh 



BX = ??? 

CX = ??? 

DX = ??? 

Return: AX = ??? (1300h) 

SeeAlso: INT 03/AX=0000h,INT 03/AX=0910h,INT 03/AX=130Ch,INT 03/AX=1313h 

--------G-031313----------------------------- 


AX = 1313h 



BX = ??? 

CX = ??? 

DX = ??? 


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Return: AX = ??? (1300h) 

SeeAlso: INT 03/AX=0000h,INT 03/AX=0910h,INT 03/AX=130Eh 

--------G-030900----------------------------- 


AX = 0900h 



Return: none??? 

SeeAlso: INT 03/AX=0000h,INT 03/AX=0910h,INT 03/AH=10h,INT 03/AH=12h 

--------C-04--------------------------------- 

INT 04 C - CPU-generated - INTO DETECTED OVERFLOW 

Desc: the INTO instruction will generate this interrupt if OF (Overflow Flag) 

is set; otherwise, INTO is effectively a NOP 

Note: may be used for convenient overflow testing (to prevent errors from 

propagating) instead of JO or a JNO/JMP combination 

SeeAlso: INT 00"CPU",OPCODE "AAD",OPCODE "AAM" 

--------B-05--------------------------------- 

INT 05 - PRINT SCREEN 

Desc: dump the current text screen to the first printer 

Notes: normally invoked by the INT 09 handler when PrtSc key is pressed, but 

may be invoked directly by applications 

byte at 0050h:0000h contains status used by default handler 

00h not active 

01h PrtSc in progress 

FFh last PrtSc encountered error 

default handler is at F000h:FF54h in IBM PC and 100%-compatible BIOSes 

since the BOUND instruction also calls INT 05h, but returns control 

to the BOUND instruction, a failed BOUND check will cause an infinite 

loop of PrtScreens unless the INT 05 handler is aware of the problem 

and checks whether the interrupt was invoked by a BOUND instruction 

BUG: some old BIOSes/applications appear to destroy BP on return 

SeeAlso: INT 10/AH=12h/BL=20h,INT 4A"Tandy 2000",INT 5E"TI Professional" 

SeeAlso: INT 80"Phar Lap" 

--------C-05--------------------------------- 

INT 05 C - CPU-generated (80186+) - BOUND RANGE EXCEEDED 

Desc: generated by BOUND instruction when the value to be tested is less than 

the indicated lower bound or greater than the indicated upper bound. 

Note: returning from this interrupt re-executes the failing BOUND instruction 

--------P-05454A----------------------------- 

INT 05 U - PSPS v2.01 - EJECT PAGE 

AX = 454Ah ('EJ') 


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Program: PSPS is shareware PostScript PrintScreen utility by A.N.D. 

Technologies 

Note: sends a ^D to the current printer 

SeeAlso: AX=4E57h,AX=5053h,AX=554Eh 

--------P-054E57----------------------------- 

INT 05 U - PSPS v2.01 - SET PARAMETERS 

AX = 4E57h ('NW') 

ES:SI -> 11-byte buffer containing new settings 

Return: buffer filled 

SeeAlso: AX=454Ah,AX=5053h,INT 17/AH=63h 

--------P-055053----------------------------- 

INT 05 U - PSPS v2.01 - GET PARAMETERS 

AX = 5053h ('PS') 

ES:SI -> 11-byte buffer for settings 

Return: buffer filled 

SeeAlso: AX=4E57h,AX=554Eh,INT 17/AH=64h 

--------P-05554E----------------------------- 

INT 05 U - PSPS v2.01 - UNINSTALL 

AX = 554Eh ('UN') 

Program: PSPS is shareware PostScript PrintScreen utility by A.N.D. 

Technologies 

SeeAlso: AX=454Ah,AX=4E57h,INT 17/AH=62h 

--------C-06--------------------------------- 

INT 06 C - CPU-generated (80186+) - INVALID OPCODE 

Desc: this interrupt is generated when the CPU attempts to execute an 

invalid opcode (most protected-mode instructions are considered 

invalid in real mode) or a BOUND, LDS, LES, or LIDT instruction 

which specifies a register rather than a memory address 

Notes: return address points to beginning of invalid instruction 

with proper programming, this interrupt may be used to emulate 

instructions which do not exist; many 386 BIOSes emulate the 80286 

undocumented LOADALL instruction which was removed from the 80386+ 

generated by the 80386+ when the LOCK prefix is used with instructions 

other than BTS, BTR, BTC, XCHG, XADD (486), CMPXCHG (486), INC, DEC, 

NOT, NEG, ADD, ADC, SUB, SBB, AND, OR, or XOR, or any instruction 

not accessing memory. 

SeeAlso: INT 0C"CPU",INT 0D"CPU" 

--------b-06--------------------------------- 

INT 06 C - HP 95LX - SLEEP/WAKEUP 

Desc: this interrupt is called just before going into light or deep 

(shutdown) sleep and just after returning from light or deep sleep 


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SeeAlso: INT 0B"HP 95LX",INT 15/AX=4DD4h,INT 15/AH=4Eh 

--------V-06--------------------------------- 

INT 06 U - no-name clone - GRAPHICS CHARACTER TABLE (NOT A VECTOR!) 

Desc: points at graphics data for characters 00h-7Fh of the current font 

SeeAlso: INT 43"EGA",INT 44"VIDEO" 

--------C-07--------------------------------- 

INT 07 C - CPU-generated (80286+) - PROCESSOR EXTENSION NOT AVAILABLE 

Desc: this interrupt is automatically called if a coprocessor instruction is 

encountered when no coprocessor is installed 

Note: can be used to emulate a numeric coprocessor in software 


--------H-08--------------------------------- 

INT 08 C - IRQ0 - SYSTEM TIMER 

Desc: generated 18.2 times per second by channel 0 of the 8254 system timer, 

this interrupt is used to keep the time-of-day clock updated 

Notes: programs which need to be invoked regularly should use INT 1C unless 

they need to reprogram the timer while still keeping the time-of-day 

clock running at the proper rate 

default handler is at F000h:FEA5h in IBM PC and 100%-compatible BIOSes 

may be masked by setting bit 0 on I/O port 21h 

SeeAlso: INT 1C,INT 4A"SYSTEM",INT 50"DESQview",INT 58"DoubleDOS",INT 70"IRQ8" 

SeeAlso: INT 78"GO32",INT D8"Screen Thief",MEM 0040h:0040h,MEM 0040h:006Ch 

--------C-08--------------------------------- 

INT 08 C - CPU-generated (80286+) - DOUBLE EXCEPTION DETECTED 

Desc: called when multiple exceptions occur on one instruction, or an 

exception occurs in an exception handler 

Notes: called in protected mode if an interrupt above the defined limit of 

the interrupt vector table occurs 

return address points at beginning of instruction with errors or the 

beginning of the instruction which was about to execute when the 

external interrupt caused the exception 

if an exception occurs in the double fault handler, the CPU goes into 

SHUTDOWN mode (which circuitry in the PC/AT converts to a reset); 

this "triple fault" is a faster way of returning to real mode on 

many 80286 machines than the standard keyboard controller reset 

--------H-09--------------------------------- 

INT 09 C - IRQ1 - KEYBOARD DATA READY 

Desc: this interrupt is generated when data is received from the keyboard. 

This is normally a scan code (from either a keypress *or* a key 

release), but may also be an ACK or NAK of a command on AT-class 

keyboards. 


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Notes: this IRQ may be masked by setting bit 1 on I/O port 21h 

if the BIOS supports an enhanced (101/102-key) keyboard, it calls 

INT 15/AH=4Fh after reading the scan code (see #00006) from the 

keyboard and before further processing; all further processing uses 

the scan code returned from INT 15/AH=4Fh 

the default interrupt handler is at F000h:E987h in 100%-compatible 

BIOSes 

the interrupt handler performs the following actions for certain 

special keystrokes: 

Ctrl-Break clear keyboard buffer, place word 0000h in buffer, 

invoke INT 1B, and set flag at 0040h:0071h 

SysReq invoke INT 15/AH=85h (SysReq is often labeled SysRq) 

Ctrl-Numlock place system in a tight wait loop until next INT 09 

Ctrl-Alt-Del jump to BIOS startup code (either F000h:FFF0h or the 

destination of the jump at that address) 

Shift-PrtSc invoke INT 05 

Ctrl-Alt-Plus (HP Vectra) enable keyclick 

Ctrl-Alt-Plus (many clones) set clock speed to high 

Ctrl-Alt-Minus (HP Vectra) reduce keyclick volume 

Ctrl-Alt-Minus (many clones) set clock speed to low 

Ctrl-Alt-SysReq (HP Vectra) generate hard reset 

Ctrl-Alt-S (many clones) run BIOS setup program 

Ctrl-Alt-Esc (many clones) run BIOS setup program 

Ctrl-Alt-Ins (many clones) run BIOS setup program 

Ctrl-Alt-LeftShift-GrayMinus (some clones) turn off system cache 

Ctrl-Alt-LeftShift-GrayPlus (some clones) turn on system cache 

DR DOS hooks this interrupt to control the cursor shape (underscore/ 

half block) for overwrite/insert mode 

DR Multiuser DOS hooks this interrupt for cursor shape control and to 

control whether Ctrl-Alt-Del reboots the current session or the 

entire system 

SeeAlso: INT 05"PRINT SCREEN",INT 0B"HP 95LX",INT 15/AH=4Fh,INT 15/AH=85h 

SeeAlso: INT 16/AH=00h,INT 16/AH=10h,INT 1B,INT 2F/AX=A901h,INT 4A/AH=00h"TI" 

SeeAlso: INT 51"DESQview",INT 59"DoubleDOS",INT 79"GO32" 


(Table 00006) 

Values for keyboard make/break (scan) code: 

01h Esc 31h N 

02h 1 ! 32h M 

03h 2 @ 33h , < 63h F16 

04h 3 # 34h . > 64h F17 

-16-


05h 4 $ 35h / ? 65h F18 

06h 5 % 36h Right Shift 66h F19 

07h 6 ^ 37h Grey* 67h F20 

08h 7 & 38h Alt 68h F21 (Fn) [*] 

09h 8 * 39h SpaceBar 69h F22 

0Ah 9 ( 3Ah CapsLock 6Ah F23 

0Bh 0 ) 3Bh F1 6Bh F24 

0Ch - _ 3Ch F2 6Ch -- 

0Dh = + 3Dh F3 6Dh EraseEOF 

0Eh Backspace 3Eh F4 

0Fh Tab 3Fh F5 6Fh Copy/Play 

10h Q 40h F6 

11h W 41h F7 

12h E 42h F8 72h CrSel 

13h R 43h F9 73h [*] 

14h T 44h F10 74h ExSel 

15h Y 45h NumLock 75h -- 

16h U 46h ScrollLock 76h Clear 

17h I 47h Home 77h [Note2] Joyst But1 

18h O 48h UpArrow 78h [Note2] Joyst But2 

19h P 49h PgUp 79h [Note2] Joyst Right 

1Ah [ { 4Ah Grey- 7Ah [Note2] Joyst Left 

1Bh ] } 4Bh LeftArrow 7Bh [Note2] Joyst Up 

1Ch Enter 4Ch Keypad 5 7Ch [Note2] Joyst Down 

1Dh Ctrl 4Dh RightArrow 7Dh [Note2] right mouse 

1Eh A 4Eh Grey+ 7Eh [Note2] left mouse 

1Fh S 4Fh End 

20h D 50h DownArrow 

21h F 51h PgDn 

22h G 52h Ins 

23h H 53h Del 

24h J 54h SysReq ---non-key codes--- 

25h K 55h [Note1] F11 00h kbd buffer full 

26h L 56h left \| (102-key) 

27h ; : 57h F11 AAh self-test complete 

28h ' " 58h F12 E0h prefix code 

29h ` ~ 59h [Note1] F15 E1h prefix code 

2Ah Left Shift 5Ah PA1 EEh ECHO 

2Bh \ | 5Bh F13 (LWin) F0h prefix code (key break) 

2Ch Z 5Ch F14 (RWin) FAh ACK 

2Dh X 5Dh F15 (Menu) FCh diag failure (MF-kbd) 




-17-


2Eh C FDh diag failure (AT-kbd) 

2Fh V FEh RESEND 

30h B FFh kbd error/buffer full 

Notes: 

scan codes 56h-E1h are only available on the extended (101/102-key) 

keyboard and Host Connected (122-key) keyboard; scan codes 5Bh-5Dh 

are only available on the 122-key keyboard and the Microsoft Natural 

Keyboard; scan codes 5Eh-76h are only available on the 122-key 

keyboard 

in the default configuration, break codes are the make scan codes with 

the high bit set; make codes 60h,61h,70h, etc. are not available 

because the corresponding break codes conflict with prefix codes 

(code 2Ah is available because the self-test result code AAh is only 

sent on keyboard initialization). An alternate keyboard 

configuration can be enabled on AT and later systems with enhanced 

keyboards, in which break codes are the same as make codes, but 

prefixed with an F0h scan code 

prefix code E0h indicates that the following make/break code is for a 

"gray" duplicate to a key which existed on the original PC keyboard; 

prefix code E1h indicates that the following make code has no 

corresponding break code (currently only the Pause key generates no 

break code) 

the Microsoft Natural Keyboard sends make codes 5Bh, 5Ch, and 5Dh 

(all with an E0h prefix) for the Left Windows, Right Windows, and 

Menu keys on the bottom row 

the European "Cherry G81-3000 SAx/04" keyboard contains contacts for 

four additional keys, which can be made available by a user 

modification; the three new keys located directly below the cursor 

pad's Delete, End, and PgDn keys send make codes 66h-68h (F19-F21); 

the fourth new key, named , sends make code 73h 

the SysReq key is often labeled SysRq 

the "Accord" ergonomic keyboard with optional touchpad (no other 

identification visible on keyboard or in owner's booklet) has an 

additional key above the Grey- key marked with a left-pointing 

triangle and labeled "Fn" in the owner's booklet which returns 

scan codes E0h 68h on make and E0h E8h on break 

the "Preh Commander AT" keyboard with additional F11-F22 keys treats 

F11-F20 as Shift-F1..Shift-F10 and F21/F22 as Ctrl-F1/Ctrl-F2; the 

Eagle PC-2 keyboard with F11-F24 keys treated those additional keys 

in the same way 

[Note1] the "Cherry G80-0777" keyboard has additional F11-F15 keys 

which generate make codes 55h-59h; some other extended keyboards 




-18-




generate codes 55h and 56h for F11 and F12, which cannot be managed 

by standard DOS keyboard drivers 

[Note2] the Schneider/Amstrad PC1512 PC keyboards contain extra keys, 

a mouse, and a digital joystick, which are handled like extra keys. 

The joystick's motion scancodes are converted into standard arrow 

keys by the BIOS, and the joystick and mouse button scan codes are 

converted to FFFFh codes in the BIOS keyboard buffer 

(see CMOS 15h"AMSTRAD"). 

In addition to the keys listed in the table above, there are 

Del-> (delete forward) 70h 

Enter 74h 

SeeAlso: #00602 at INT 16/AX=6F07h,#03214 at INT 4A/AH=05h 

--------C-09--------------------------------- 

INT 09 C - CPU-generated (80286,80386) - PROCESSOR EXTENSION PROTECTION ERROR 

Desc: called if the coprocessor attempts to access memory outside a segment 

boundary; it may occur at an arbitrary time after the coprocessor 

instruction was issued 

Notes: until the condition is cleared or the coprocessor is reset, the only 

coprocessor instruction which may be used is FNINIT; WAIT or other 

coprocessor instructions will cause a deadlock because the 

coprocessor is still busy waiting for data 

for the 486+, a coprocessor protection error generates an INT 0D 


--------*-09--------------------------------- 

INT 09 P - internal hardware - RESERVED BY Intel (80486) 

Note: this exception has been moved to INT 0D 

SeeAlso: INT 09"CPU",INT 0D 

--------H-0A--------------------------------- 

INT 0A C - IRQ2 - LPT2 (PC), VERTICAL RETRACE INTERRUPT (EGA,VGA) 

Notes: the TOPS and PCnet adapters use this interrupt request line by default 

DOS 3.2 revectors IRQ2 to a stack-switching routine; DOS 3.3+ does so 

unless STACKS=0 has been set in CONFIG.SYS. MS/PC-DOS 3.3+ use the 

IBM Interrupt Sharing Protocol (see #02568) when hooking this IRQ 

on ATs and above, the physical data line for IRQ2 is labeled IRQ9 and 

connects to the slave 8259. The BIOS redirects the interrupt for 

IRQ9 back here. 

under DESQview, only the INT 15h vector and BASIC segment address (the 

word at 0000h:0510h) may be assumed to be valid for the handler's 

process 

many VGA boards do not implement the vertical retrace interrupt, 

including the IBM VGA Adapter where the traces are either cut or 


-19-




removed 

SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32" 

--------H-0A--------------------------------- 

INT 0A C - IRQ2 - Tandy 1000-series HARD DISK 

Notes: this interrupt may be masked by setting bit 2 on I/O port 21h 

the Tandy 1000, 1000A, and 1000HD use IRQ2 for the hard disk; the 

1000EX, HX, RLX, RLX-HD, RLX-B, RLX-HD-B use IRQ5 instead; the 

1000RL, RL-HD, SL, SL/2, TL, TL/2, and TL/3 are jumper-selectable 

for either IRQ2 or IRQ5 (default IRQ5); the 1000SX and TX are 

DIP-switch selectable for IRQ2 or IRQ5 (default IRQ2); the RSX and 

RSX-HD use IRQ14. Tandy systems which use IRQ2 for the hard disk 

interrupt use IRQ5 for vertical retrace. 

SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71 

--------H-0A--------------------------------- 

INT 0A - IRQ2 - ROLAND MPU MIDI INTERFACE 

Note: newer Roland cards and MIDI interfaces by other manufacturers use 

a jumper-selectable IRQ, but software and hardware generally defaults 

to IRQ2 

SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32" 

--------C-0A--------------------------------- 

INT 0A CP - CPU-generated (80286+) - INVALID TASK STATE SEGMENT 

Desc: automatically called during a task switch if the new TSS specified by 

the task gate is invalid for any of the following reasons: 

TSS limit is less than 43 (80286) or 103 (80386/80486) 

LDT selector invalid or segment not present 

null SS selector, or SS selector outside LDT/GDT limit 

stack segment is read-only 

stack segment DPL differs from new CPL, or RPL CPL 

CS selector is outside LDT/GDT limit or not code 

non-conforming code segment's DPL differs from CPL 

conforming code segment's DPL > CPL 

DS/ES selectors outside LDT/GDT limit or not readable segments 

Note: the handler must use a task gate in order to have a valid TSS under 

which to execute; it must also reset the busy bit in the new TSS 

SeeAlso: INT 0B"CPU" 

--------H-0B--------------------------------- 

INT 0B C - IRQ3 - SERIAL COMMUNICATIONS (COM2) 

Desc: automatically asserted by the UART when COM2 needs attention, if the 

UART has been programmed to generate interrupts 

Notes: the TOPS and PCnet adapters use this interrupt request line as an 

alternate 


-20-




on PS/2s, COM2 through COM8 share this interrupt; on many PC's, COM4 

shares this interrupt 


DOS 3.3+ revectors IRQ3 to a stack-switching routine unless STACKS=0 

has been set in CONFIG.SYS. MS/PC-DOS use the IBM Interrupt Sharing 

Protocol (see #02568) when hooking this IRQ 

SeeAlso: INT 0C"COM1",INT 53"DESQview",INT 5B"DoubleDOS",INT 7B"GO32" 

--------C-0B--------------------------------- 

INT 0B CP - CPU-generated (80286+) - SEGMENT NOT PRESENT 

Desc: generated when loading a segment register if the segment descriptor 

indicates that the segment is not currently in memory, unless the 

segment is an LDT (see INT 0A"CPU") or stack segment (see 

INT 0C"CPU") needed by a task switch 

Note: may be used to implement virtual memory by loading in segments as they 

are accessed, clearing the "not present" bit after loading 

SeeAlso: INT 0A"CPU",INT 0E"CPU" 

--------h-0B--------------------------------- 

INT 0B - HP 95LX - LOW-LEVEL KEYBOARD HANDLER 

Desc: this is the lowest-level keyboard handler on an HP 95LX palmtop 

Note: debounces key, places the keycode in I/O register 60h, and calls INT 09 

SeeAlso: INT 09,INT 0D"HP 95LX",INT 15/AX=4DD4h 

--------H-0C--------------------------------- 

INT 0C C - IRQ4 - SERIAL COMMUNICATIONS (COM1) 

Desc: automatically asserted by the UART when COM1 needs attention, if the 

UART has been programmed to generate interrupts 

BUG: this vector is modified but not restored by Direct Access v4.0, and 

may be left dangling by other programs written with the same version 

of compiled BASIC 

Notes: on many PC's, COM3 shares this interrupt 





SeeAlso: INT 0B"COM2",INT 54"DESQview",INT 5C"DoubleDOS",INT 7C"GO32" 

--------C-0C--------------------------------- 

INT 0C C - CPU-generated (80286+) - STACK FAULT 

Desc: this interrupt is generated in protected mode on a stack overflow or 

underflow, or if an inter-level transition or task switch references 

a stack segment marked "not present"; it is generated in real mode 

on accessing a word operand at SS:FFFFh 

Note: the 80286 will shut down in real mode if SP=1 before a push. On the 


-21-




PC AT and compatibles, external circuitry generates a reset on 

shutdown. 

SeeAlso: INT 0B"CPU",INT 0D"CPU" 

--------I-0C--------------------------------- 

INT 0C - IBM SYSTEM 36/38 WORKSTATION EMULATION - API POINTER 

Desc: the IBM System 36/38 emulator may be invoked through a private API, 

whose entry point address (see #00007) is offset 100h in the segment 

pointed at by this vector 


(Table 00007) 

Call the System 36/38 emulator API entry point with: 

AH = function 

03h update screen 

05h select next session 

AL = session number (00h-03h) 

Return: AL = session type code 

00h not active 

01h display session 

02h printer session 

FEh invalid session number 

DS = requested session's data segment (0 if not active) 

(see #00008) 

Return: ??? 

Format of System 36/38 emulator's data area: 


13Eh BYTE bit flags for status line indicators turned on since this byte 

last zerod 

13Fh BYTE bit flags for status line indicators turned off since this 

byte last set to FFh 

140h WORD offset of EBCDIC to ASCII translation 

146h WORD offset of EBCDIC screen buffer 

148h WORD offset of EC (engineering change) level signature 

150h BYTE "KEYI" 

151h BYTE 5250 key scan code to be sent to remote 

15Bh BYTE "SYSAV" 

15Dh BYTE 5250 cursor column 

15Eh BYTE 5250 cursor row 

167h BYTE "DVCTAD" 

178h BYTE "FLAGS" 

184h BYTE "SESSNOAD" 

-22-




193h BYTE "STNAD" 

198h BYTE "NSDS" 

Note: offsets are from the interrupt handler's segment 

--------H-0D--------------------------------- 

INT 0D C - IRQ5 - FIXED DISK (PC,XT), LPT2 (AT), reserved (PS/2) 

Notes: under DESQview, only the INT 15h vector and BASIC segment address (the 

word at 0000h:0510h) may be assumed to be valid for the handler's 

process 




the Tandy 1000, 1000A, and 1000HD use IRQ2 for the hard disk; the 

1000EX, HX, RLX, RLX-HD, RLX-B, RLX-HD-B use IRQ5 instead; the 

1000RL, RL-HD, SL, SL/2, TL, TL/2, and TL/3 are jumper-selectable 

for either IRQ2 or IRQ5 (default IRQ5); the 1000SX and TX are 

DIP-switch selectable for IRQ2 or IRQ5 (default IRQ2); the RSX and 

RSX-HD use IRQ14. Tandy systems which use IRQ2 for the hard disk 

interrupt use IRQ5 for vertical retrace. 


SeeAlso: INT 0E"IRQ6",INT 0F"IRQ7",INT 55"DESQview",INT 5D"DoubleDOS" 

SeeAlso: INT 7D"GO32" 

--------H-0D--------------------------------- 

INT 0D C - IRQ5 - Tandy 1000 60 Hz RAM REFRESH 

Desc: used to ensure that the dynamic RAM retains its contents in earlier 

1000-series models; later models use normal DMA for RAM refresh 

(some early models have no DMA unless it is added via an expansion 

card) 

SeeAlso: INT 55 

--------h-0D--------------------------------- 

INT 0D - HP 95LX - INFRARED INTERRUPT 

Desc: this interrupt is used to perform communications over the infrared 

data link 

SeeAlso: INT 0B"HP 95LX",INT 0E"HP 95LX",INT 15/AX=4DD4h 

--------C-0D--------------------------------- 

INT 0D C - CPU-generated (80286+) - GENERAL PROTECTION VIOLATION 

Desc: the CPU generates this interrupt when it detects a protection violation 

which does not fit under any other category having a separate 

interrupt 

Notes: called in real mode when 

an instruction accesses a memory operand extending beyond offset 

FFFFh (i.e. WORD at FFFFh or DWORD at FFFDh or higher) in segment 


-23-




CS, DS, ES, FG, or GS 

a PUSH MEM or POP MEM instruction contains an invalid bit encoding 

in the second byte 

an instruction exceeds the maximum length allowed (10 bytes for 

80286, 15 bytes for 80386/80486) 

an instruction wraps from offset FFFFh to offset 0000h 

called in protected mode on protection violations not covered by INT 06 

through INT 0C, including 

segment limit violations 

write to read-only segments 

accesses using null DS or ES selectors 

accesses to segments with privilege greater than CPL 

wrong descriptor type 

called on 80486 protected-mode floating-point protection fault 

SeeAlso: INT 09"80486",INT 0C"STACK" 

--------H-0E--------------------------------- 

INT 0E C - IRQ6 - DISKETTE CONTROLLER 

Desc: this interrupt is generated by the floppy disk controller on 

completion of an operation 

Notes: default handler is at F000h:EF57h in IBM PC and 100%-compatible BIOSes 





SeeAlso: INT 0D"IRQ5",INT 56"DESQview",INT 5E"DoubleDOS",INT 7E"GO32" 

--------C-0E--------------------------------- 

INT 0E C - CPU-generated (80386+ native mode) - PAGE FAULT 

Desc: this interrupt is generated in protected and virtual-86 modes on 

attempting to access a 4K memory page whose page table entry has 

the "present" bit cleared 

Notes: used to implement virtual memory--when the page fault occurs, the 

operating system can load the appropriate page from disk 

a protected-mode program written in the Flat memory model will often 

generate this interrupt (typically reported as an Exception #14 or 

Exception 0E with a register dump) when dereferencing an 

uninitialized or corrupted pointer 

SeeAlso: INT 0B"CPU" 

--------h-0E--------------------------------- 

INT 0E C - HP 95LX - EXTERNAL CARD INTERRUPT 

SeeAlso: INT 0D"HP 95LX",INT 0F"HP 95LX",INT 15/AX=4DD4h 

--------H-0F--------------------------------- 


-24-




INT 0F C - IRQ7 - PARALLEL PRINTER 

Desc: this interrupt is generated by the LPT1 printer adapter when the 

printer becomes ready 

Notes: most printer adapters do not reliably generate this interrupt 

the 8259 interrupt controller generates an interrupt corresponding to 

IRQ7 when an error condition occurs 

SeeAlso: INT 0D"IRQ5",INT 57"DESQview",INT 5F"DoubleDOS",INT 7F"GO32" 

SeeAlso: MEM 0040h:006Bh 

--------h-0F--------------------------------- 

INT 0F C - HP 95LX - REAL-TIME CLOCK 

SeeAlso: INT 0E"HP 95LX",INT 15/AX=4DD4h,INT 70"IRQ8" 

--------C-10--------------------------------- 

INT 10 C - CPU-generated (80286+) - COPROCESSOR ERROR 

Desc: this interrupt is generated by the CPU when the -ERROR pin is asserted 

by the coprocessor 

Note: AT's and clones usually wire the coprocessor to use IRQ13, but not all 

get it right 

SeeAlso: INT 09"hardware",INT 75 

--------V-10--------------------------------- 

INT 10h - LIRVGA19 - CHAR HEIGHT HOOK 

Desc: LIRVGA19.COM fixes display problems on some notebooks by hooking 

INT 10h and resetting the BIOS character height (MEM 0040h:0085h) 

to 10h on return, if it happens to be greater than 10h. 

Program: LIRVGA19.COM is part of the Lithuanian LIR codepage support package 

developed by LABAS u.a.b. 

SeeAlso: INT 10/AX=5555h/BX=BBBBh,MEM 0040h:0085h 

--------V-1000------------------------------- 

INT 10 - VIDEO - SET VIDEO MODE 

AH = 00h 

AL = desired video mode (see #00010) 

Return: AL = video mode flag (Phoenix, AMI BIOS) 

20h mode > 7 

30h modes 0-5 and 7 

3Fh mode 6 

AL = CRT controller mode byte (Phoenix 386 BIOS v1.10) 

Desc: specify the display mode for the currently active display adapter 

InstallCheck: for Ahead adapters, the signature "AHEAD" at C000h:0025h 

for Paradise adapters, the signature "VGA=" at C000h:007Dh 

for Oak Tech OTI-037/057/067/077 chipsets, the signature "OAK VGA" at 

C000h:0008h 

for ATI adapters, the signature "761295520" at C000h:0031h; the byte 


-25-




at C000h:0043h indicates the chipset revision: 

31h for 18800 

32h for 18800-1 

33h for 18800-2 

34h for 18800-4 

35h for 18800-5 

62h for 68800AX (Mach32) (see also #00732) 

the two bytes at C000h:0040h indicate the adapter type 

"22" EGA Wonder 

"31" VGA Wonder 

"32" EGA Wonder800+ 

the byte at C000h:0042h contains feature flags 

bit 1: mouse port present 

bit 4: programmable video clock 

the byte at C000h:0044h contains additional feature flags if chipset 

byte > 30h (see #00009) 

for Genoa video adapters, the signature 77h XXh 99h 66h at C000h:NNNNh, 

where NNNNh is stored at C000h:0037h and XXh is 

00h for Genoa 6200/6300 

11h for Genoa 6400/6600 

22h for Genoa 6100 

33h for Genoa 5100/5200 

55h for Genoa 5300/5400 

for SuperEGA BIOS v2.41+, C000h:0057h contains the product level 

for Genoa SuperEGA BIOS v3.0+, C000h:0070h contains the signature 

"EXTMODE", indicating support for extended modes 

Notes: IBM standard modes do not clear the screen if the high bit of AL is set 

(EGA or higher only) 

the Tseng ET4000 chipset is used by the Orchid Prodesigner II, Diamond 

SpeedSTAR VGA, Groundhog Graphics Shadow VGA, Boca Super X VGA, 

Everex EV-673, etc. 

intercepted by GRAFTABL from Novell DOS 7 and Caldera OpenDOS 7.01. 

SeeAlso: AX=0070h,AX=007Eh,AX=10E0h,AX=10F0h,AH=40h,AX=6F05h,AH=FFh"GO32" 

SeeAlso: INT 33/AX=0028h,INT 5F/AH=00h,INT 62/AX=0001h,MEM 0040h:0049h 

Index: installation check;Tseng ET4000|installation check;Ahead video cards 

Index: installation check;Oak Technologies|installation check;ATI video cards 

Index: installation check;Paradise video|installation check;Genoa video cards 


Bitfields for ATI additional feature flags: 

Bit(s) Description (Table 00009) 

0 70 Hz non-interlaced display 

-26-


1 Korean (double-byte) characters 

2 45 MHz memory clock rather than 40 MHz 

3 zero wait states 

4 paged ROMs 

6 no 8514/A monitor support 

7 HiColor DAC 




(Table 00010) 

Values for video mode: 

text/ text pixel pixel colors disply scrn system 

grph resol box resolution pages addr 

00h = T 40x25 8x8 320x200 16gray 8 B800 CGA,PCjr,Tandy 

= T 40x25 8x14 320x350 16gray 8 B800 EGA 

= T 40x25 8x16 320x400 16 8 B800 MCGA 

= T 40x25 9x16 360x400 16 8 B800 VGA 

01h = T 40x25 8x8 320x200 16 8 B800 CGA,PCjr,Tandy 

= T 40x25 8x14 320x350 16 8 B800 EGA 

= T 40x25 8x16 320x400 16 8 B800 MCGA 

= T 40x25 9x16 360x400 16 8 B800 VGA 

02h = T 80x25 8x8 640x200 16gray 4 B800 CGA,PCjr,Tandy 

= T 80x25 8x14 640x350 16gray 8 B800 EGA 

= T 80x25 8x16 640x400 16 8 B800 MCGA 

= T 80x25 9x16 720x400 16 8 B800 VGA 

03h = T 80x25 8x8 640x200 16 4 B800 CGA,PCjr,Tandy 

= T 80x25 8x14 640x350 16/64 8 B800 EGA 

= T 80x25 8x16 640x400 16 8 B800 MCGA 

= T 80x25 9x16 720x400 16 8 B800 VGA 

= T 80x43 8x8 640x350 16 4 B800 EGA,VGA [17] 

= T 80x50 8x8 640x400 16 4 B800 VGA [17] 

04h = G 40x25 8x8 320x200 4 . B800 CGA,PCjr,EGA,MCGA,VGA 

05h = G 40x25 8x8 320x200 4gray . B800 CGA,PCjr,EGA 

= G 40x25 8x8 320x200 4 . B800 MCGA,VGA 

06h = G 80x25 8x8 640x200 2 . B800 CGA,PCjr,EGA,MCGA,VGA 

= G 80x25 . . mono . B000 HERCULES.COM on HGC [14] 

07h = T 80x25 9x14 720x350 mono var B000 MDA,Hercules,EGA 

= T 80x25 9x16 720x400 mono . B000 VGA 

08h = T 132x25 8x8 1056x200 16 . B800 ATI EGA/VGA Wonder [2] 

= T 132x25 8x8 1056x200 mono . B000 ATI EGA/VGA Wonder [2] 

= G 20x25 8x8 160x200 16 . . PCjr, Tandy 1000 

= G 80x25 8x16 640x400 color . . Tandy 2000 

= G 90x43 8x8 720x348 mono . B000 Hercules + MSHERC.COM 

-27-


= G 90x45 8x8 720x360 mono . 


B000 Hercules + HERKULES [11] 

= G 90x29 8x12 720x348 mono . . Hercules + HERCBIOS [15] 

09h = G 40x25 8x8 320x200 16 . . PCjr, Tandy 1000 

= G 80x25 8x16 640x400 mono . . Tandy 2000 

= G 90x43 8x8 720x348 mono . . Hercules + HERCBIOS [15] 

0Ah = G 80x25 8x8 640x200 4 . . PCjr, Tandy 1000 

0Bh = reserved (EGA BIOS internal use) 

= G 80x25 8x8 640x200 16 . . Tandy 1000 SL/TL [13] 

0Ch = reserved (EGA BIOS internal use) 

0Dh = G 40x25 8x8 320x200 16 8 A000 EGA,VGA 

0Eh = G 80x25 8x8 640x200 16 4 A000 EGA,VGA 

0Fh = G 80x25 8x14 640x350 mono 2 A000 EGA,VGA 

10h = G 80x25 8x14 640x350 4 2 A000 64k EGA 

= G . . 640x350 16 . A000 256k EGA,VGA 

11h = G 80x30 8x16 640x480 mono . A000 VGA,MCGA,ATI EGA,ATI VIP 

12h = G 80x30 8x16 640x480 16/256K . A000 VGA,ATI VIP 

= G 80x30 8x16 640x480 16/64 . A000 ATI EGA Wonder 

= G . . 640x480 16 . . UltraVision+256K EGA 

13h = G 40x25 8x8 320x200 256/256K . A000 VGA,MCGA,ATI VIP 

14h = T 132x25 Nx16 . 16 . B800 XGA, IBM Enhanced VGA [3] 

= T 132x25 8x16 1056x400 16/256K . . Cirrus CL-GD5420/5422/5426 

= G 80x25 8x8 640x200 . . . Lava Chrome II EGA 

= G . . 640x400 16 . . Tecmar VGA/AD 

15h = G 80x25 8x14 640x350 . . . Lava Chrome II EGA 

16h = G 80x25 8x14 640x350 . . . Lava Chrome II EGA 


17h = T 132x25 . . . . . Tecmar VGA/AD 

= T 80x43 8x8 640x348 16 4 B800 Tseng ET4000 BIOS [10] 


18h = T 80x30 9x16 720x480 16 1 A000 Realtek RTVGA [12] 

= T 132x25 . . mono . B000 Cirrus 5320 chipset 

= T 132x44 8x8 1056x352 mono . B000 Tseng Labs EVA 

= T 132x44 9x8 1188x352 4gray 2 B000 Tseng ET3000 chipset 

= T 132x44 8x8 1056x352 16/256 2 B000 Tseng ET4000 chipset 


= G 1024x768 16 . . Tecmar VGA/AD 

19h = T 80x43 9x11 720x473 16 1 A000 Realtek RTVGA [12] 







-28-


1Ah = T 80x60 9x8 720x480 16 1 


A000 Realtek RTVGA [12] 






1Bh = T 132x25 9x14 1188x350 16 1 A000 Realtek RTVGA [12] 


1Ch = T 132x25 . . . . . Cirrus 5320 chipset 

= T 132x30 9x16 1188x480 16 1 A000 Realtek RTVGA [12] 


1Dh = T 132x43 . . . . . Cirrus 5320 chipset 



1Eh = T 132x44 . . . . . Cirrus 5320 chipset 


1Fh = G 100x75 8x8 800x600 16 1 A000 Realtek RTVGA 

20h = T 132x25 . . 16 . . Avance Logic AL2101 

= G 40x16 . 240x128 mono . B000 HP 95LX/100LX/200LX 

= G 80x30 8x16 640x480 16 . . C&T 64310/65530 BIOS 

= G 120x45 8x16 960x720 16 1 A000 Realtek RTVGA 

21h = T 80x25 . . mono . B000 HP 200LX 

= T 132x30 . . 16 . . Avance Logic AL2101 

= T 132x44 9x9 1188x396 16/256K . B800 WD90C 

= T 132x44 9x9 1188x396 16 . B800 Diamond Speedstar 24X 

= T 132x60 . . 16 2 B800 Tseng ET4000 chipset [10] 

= G 80x43 8x8 720x348 mono . B000 DESQview 2.x+Hercules [4] 

= G 128x48 8x16 1024x768 16 1 A000 Realtek RTVGA [12] 

22h = T 132x43 . . . . . Allstar Peacock (VGA) 


= T 132x44 8x8 1056x352 . . B800 Tseng Labs EVA 

= T 132x44 9x8 1188x352 16/256K 2 B800 Tseng ET3000 chipset 


= T 132x44 8x8 1056x352 . . . Ahead Systems EGA2001 

= T 132x44 8x8 1056x352 16 2 B800 Ahead B 

= T 132x44 8x9 1056x398 16 . . STB Lightspeed ET4000/W32P 

= T 132x44 . . 16 . . Orchid Prodesigner VGA 

= G 80x43 8x8 720x348 mono . B800 DESQview 2.x+Hercules [4] 


= G 100x37 8x16 800x600 16 . . C&T 64310/65530 BIOS 

23h = T 132x25 6x14 792x350 . . B800 Tseng Labs EVA 



-29-


= T 132x25 9x14 1188x350 16/256K 4 


B800 Tseng ET3000 chipset 


= T 132x25 8x14 1056x350 . . . Ahead Systems EGA2001 

= T 132x25 8x14 1056x350 16 4 B800 Ahead B 

= T 132x25 8x8 1056x200 16 . B800 ATI EGA Wonder,ATI VIP 

= T 132x25 . . . . . Cirrus 5320 chipset 

= T 132x28 . . . . . Allstar Peacock (VGA) 







= T 132x28 6x13 792x364 . . B800 Tseng Labs EVA 


= T 132x28 8x12 1056x336 16 1 B800 Ahead B 





= G 128x48 8x16 1024x768 16 . . C&T 64310/65530 BIOS 


= G 80x60 8x8 640x480 . . A000 Tseng Labs EVA 

= G 80x60 8x8 640x480 16/256K 1 A000 Tseng ET3000/4000 chipset 

= G . . 640x480 16 . . VEGA VGA 

= G 80x60 8x8 640x480 16 . A000 Orchid Prodesigner VGA 

= G 80x60 8x8 640x480 16 1 A000 Ahead B (same as 26h) 

= G . . 640x480 16 . . NEC GB-1 

= G . . 640x480 16 . . Cirrus 5320 chipset 

= G . . 640x400 256 . . Realtek RTVGA 

26h = T 80x60 8x8 640x480 . . . Tseng Labs EVA 

= T 80x60 8x8 640x480 16/256K 3 B800 Tseng ET3000/4000 chipset 


= T 80x60 . . 16 . . Orchid ProDesigner VGA 


= G 80x60 8x8 640x480 . . . Ahead Systems EGA2001 

= G 80x60 8x8 640x480 16 1 A000 Ahead B (same as 25h) 


27h = T 132x25 8x8 1056x200 mono . B000 ATI EGA Wonder,ATI VIP 

= G . . 720x512 16 . . VEGA VGA 

= G . . 720x512 16 . . Genoa 



-30-


= G 100x75 8x8 800x600 256 1 


A000 Realtek RTVGA [12] 

= G . . 960x720 16 . . Avance Logic AL2101 

28h = T ???x??? . . . . . VEGA VGA 


= G . . 1024x768 256 . . Realtek RTVGA (1meg) 

= G 160x64 8x16 1280x1024 16 . . Chips&Technologies 64310 [1] 

29h = G . . 640x400 256 . . Avance Logic AL2101 

= G . . 800x600 16 . . VEGA VGA 

= G 100x37 8x16 800x600 16 . A000 Orchid 

= G . . 800x600 16 . A000 STB,Genoa,Sigma 

= G . . 800x600 16 . . Allstar Peacock (VGA) 


= G . . 800x600 ??? . . EIZO MDB10 


= G NA . 800x600 16 . . Compaq QVision 1024/1280 

= G . . 1024x1024 256 . . Realtek RTVGA BIOS v3.C10 

2Ah = T 100x40 . . . . . Allstar Peacock (VGA) 

= T 100x40 8x16 800x640 16 . . Orchid Prodesigner VGA 

= T 100x40 8x15 800x600 16/256K 4 B800 Tseng ET3000/4000 chipset 




2Bh = G . . 800x600 16 . . Avance Logic AL2101 

2Ch = G . . 800x600 256 . . Avance Logic AL2101 

2Dh = G . . 640x350 256 . . VEGA VGA 

= G . . 640x350 256/256K . A000 Orchid, Genoa, STB 



= G 80x25 8x14 640x350 256 . . STB Lightspeed ET4000/W32P 


2Eh = G . . 640x480 256 . . VEGA VGA 

= G 80x30 8x16 640x480 256/256K . A000 Orchid 

= G . . 640x480 256/256K . A000 STB,Genoa,Sigma 


= G . . 640x480 256/256K . . Compaq QVision 1024/1280 


2Fh = T 160x50 8x8 1280x400 16 4 B800 Ahead B (Wizard/3270) 

= G . . 720x512 256 . . VEGA VGA 

= G . . 720x512 256 . . Genoa 

= G 80x25 8x16 640x400 256/256K 1 A000 Tseng ET4000 chipset 




-31-


30h = G 80x30 8x16 640x480 


256 . . C&T 64310/65530 BIOS 

= G . . . . . B800 AT&T 6300 

= G . . 720x350 2 . . 3270 PC 

= G . . 800x600 256 . . VEGA VGA 

= G 100x37 8x16 800x600 256/256K . A000 Orchid 

= G . . 800x600 256/256K . A000 STB,Genoa,Sigma 

= G . . 800x600 256 . . Cardinal 



31h = G . . 1024x768 256 . . Avance Logic AL2101 

32h = T 80x34 8x10 . 16 4 B800 Ahead B (Wizard/3270) 

= G . . 640x480 256 . . Compaq QVision 1024/1280 

= G 100x37 8x16 800x600 256 . . C&T 64310/65530 BIOS 

33h = T 132x44 8x8 . 16 . B800 ATI EGA Wonder,ATI VIP 

= T 80x34 8x8 . 16 4 B800 Ahead B (Wizard/3270) 

34h = T 80x66 8x8 . 16 4 B800 Ahead B (Wizard/3270) 


= G 128x48 8x16 1024x768 256 . . Chips&Technologies 64310 

36h = G . . 960x720 16 . . VEGA VGA, STB 

= G . . 960x720 16 . A000 Tseng ET3000 only 


37h = T 132x44 8x8 . mono . B800 ATI EGA Wonder,ATI VIP 

= G . . 1024x768 16 . . VEGA VGA 

= G 128x48 8x16 1024x768 16 . A000 Orchid 

= G . . 1024x768 16 . A000 STB,Genoa,Sigma 

= G . . 1024x768 16 . . Definicon 

= G 128x48 8x16 1024x768 16 1 A000 Tseng ET3000/4000 chipset 



38h = G . . 1024x768 256 . . STB VGA/EM-16 Plus (1MB) 

= G 128x48 8x16 1024x768 256/256K 1 A000 Tseng ET4000 chipset 

= G . . 1024x768 256 . . Orchid ProDesigner II 


= G 160x64 8x16 1280x1024 256 . . Chips&Technologies 64310 [1] 

39h = G . . 1280x1024 16 . . Compaq QVision 1280 

3Ah = G . . 1280x1024 256 . . Compaq QVision 1280 

3Bh = G . . 512x480 256 . . Compaq QVision 1024/1280 

3Ch = G . . 640x400 64K . . Compaq QVision 1024/1280 

3Dh = G . . 1280x1024 16 . . Definicon 

= G 128x64 8x16 1280x1024 16 1 A000 Tseng ET4000 v3.00 [1,7] 

3Eh = G . . 1280x961 16 . . Definicon 



-32-


= G . . 640x480 64K 


. . Compaq QVision 1024/1280 

3Fh = G . . 1280x1024 256 . . Hercules ??? (ET4000W32) 

= G . . 800x600 64K . . Compaq QVision 1024/1280 

40h = T 80x43 . . . . . VEGA VGA, Tecmar VGA/AD 

= T 80x43 . . . . . Video7 V-RAM VGA 

= T 80x43 . . . . . Tatung VGA 

= T 100x30 . . 16 . . MORSE VGA 

= T 100x30 . . . . . Cirrus 510/520 chipset 

= T 80x25 . 720x350 mono . . Genoa SuperEGA BIOS 3.0+ 

= G . . 320x200 64K . . Avance Logic AL2101 

= G 80x25 8x16 640x400 2 1 B800 AT&T 6300, AT&T VDC600 

= G 80x25 8x16 640x400 2 1 B800 Olivetti Quaderno 

= G 80x25 8x16 640x400 2 1 B800 Compaq Portable 

= G 80x30 8x16 640x480 32K . . Chips&Technologies 64310 

= G . . 1024x768 64K . . Compaq QVision 1280 

41h = T 132x25 . . . . . VEGA VGA 

= T 132x25 . . . . . Tatung VGA 


= T 100x50 . . 16 . . MORSE VGA 


= T 80x34 9x14 720x476 16/256K . B800 WD90C 

= T 80x34 9x14 . 16 . B800 Diamond Speedstar 24X 


= G . . 640x200 16 1 . AT&T 6300 


= G 80x25 . 720x348 mono . B000 Genoa SuperEGA BIOS 3.0+ 

42h = T 132x43 . . . . . VEGA VGA 

= T 132x43 . . . . . Tatung VGA 



= T 100x60 . . 16 . . MORSE VGA 


= G 80x25 8x16 640x400 16 . . AT&T 6300, AT&T VDC600 


= G 80x25 . 720x348 mono . B800 Genoa SuperEGA BIOS 3.0+ 


43h = T 80x60 . . . . . VEGA VGA 

= T 80x60 . . . . . Tatung VGA 



= T 100x75 . . 16 . . MORSE VGA 



-33-


= T 80x29 . 720x348 mono 


. . Genoa SuperEGA BIOS 3.0+ 

= G . . 640x200 of 640x400 viewport AT&T 6300 (unsupported) 



44h = disable VDC and DEB output . AT&T 6300 

= T 100x60 . . . . . VEGA VGA 

= T 100x60 . . . . . Tatung VGA 




45h = T 132x28 . . . . . Tatung VGA 



46h = T 132x25 8x14 . mono . . Genoa 6400 

= T 132x25 9x14 . mono . . Genoa SuperEGA BIOS 3.0+ 

= G 100x40 8x15 800x600 2 . . AT&T VDC600 



= T 132x28 9x16 1188x448 16/256K . B800 WD90C 


= G 100x37 8x16 800x600 16 . . AT&T VDC600 



= G 80x50 8x8 640x400 2 . B800 AT&T 6300, AT&T VDC600 

= G 80x50 8x8 640x400 2 . B800 Olivetti Quaderno 




= G 80x30 8x16 640x480 . . A000 Diamond Stealth64 Video 2xx1 

4Bh = G 100x37 8x16 800x600 . . A000 Diamond Stealth64 Video 2xx1 

4Dh = T 120x25 . . . . . VEGA VGA 

= G . . 512x480 16M . . Compaq QVision 1024/1280 


4Eh = T 120x43 . . . . . VEGA VGA 

= T 80x60 8x8 . 16/256K . B800 Oak OTI-067/OTI-077 [8] 

= G . . 640x400 16M . . Compaq QVision 1024/1280 


4Fh = T 132x25 . . . . . VEGA VGA 

= T 132x60 . . . . . some Oak Tech VGA [8] 

= G . . 640x480 16M . . Compaq QVision 1280 

50h = T 80x30 8x16 . 16/256K . B800 Trident TVGA 8800/8900 



-34-


= T 80x34 . . . . . Lava Chrome II EGA 


= T 80x43 . . mono . . VEGA VGA 

= T 132x25 9x14 . mono . . Ahead Systems EGA2001 

= T 132x25 9x14 . 4 4 B800 Ahead B 

= T 132x25 8x14 . 16 8 B800 OAK Technologies VGA-16 

= T 132x25 8x14 . 16/256K . B800 Oak OTI-037/067/077 [8] 

= T 132x25 8x14 1056x350 16 8 B800 UM587 chipset 

= T 132x30 . . 16 . . MORSE VGA 


= G 80x30 8x16 640x480 16 . . Paradise EGA-480 

= G 80x30 8x16 640x480 16 . . NEL Electronics BIOS 

= G 80x30 8x16 640x480 16M . . Chips&Technologies 64310 

= G . . 640x480 mono??? . . Taxan 565 EGA 

= G 40x25 8x8 320x200 . . . Genoa SuperEGA BIOS 3.0+ 

51h = T 80x30 8x16 . . . . Paradise EGA-480 

= T 80x30 9x16 . . . . NEL Electronics BIOS 


= T 80x43 8x11 . 16/256K . B800 Trident TVGA 8800/8900 


= T 132x28 9x12 . 4 4 B800 Ahead B 

= T 132x43 8x8 . 16 5 B800 OAK Technologies VGA-16 

= T 132x43 8x8 . 16/256K . B800 Oak OTI-037/067/077 

= T 132x43 8x8 1056x344 16 5 B800 UM587 chipset 

= T 132x50 . . 16 . . MORSE VGA 


= G 80x34 8x14 640x480 16 . . ATI EGA Wonder 

= G 80x25 8x8 640x200 . . . Genoa SuperEGA BIOS 3.0+ 

52h = T 80x60 . . . . . Lava Chrome II EGA 



= T 132x44 9x8 . mono . . Ahead Systems EGA2001 

= T 132x44 9x8 . 4 2 B800 Ahead B 

= T 132x60 . . 16 . . MORSE VGA 


= G 80x25 8x19 640x480 16 1 A000 AX VGA (Kanji&superimpose) 

= G 94x29 8x14 752x410 16 . . ATI EGA Wonder 

= G 100x75 8x8 800x600 16 1 A000 OAK Technologies VGA-16 

= G 100x75 8x8 800x600 16 . A000 Oak OTI-037 chipset [8] 

= G 100x37 8x16 800x600 16 . A000 Oak OTI-067/077 chips [8] 

= G 100x75 8x8 800x600 16 . A000 UM587 chipset 




-35-


53h = T 80x25 8x16 . . . . NEL Electronics BIOS 


= T 80x60 . . 16 . . MORSE VGA 




= G 80x25 8x19 640x480 16 1 A000 AX VGA (Kanji, no superimp.) 

= G . . 640x480 256 . . Oak VGA 

= G 80x30 8x16 640x480 256 . A000 Oak OTI-067/OTI-077 [8] 

= G 100x40 8x14 800x560 16 . . ATI EGA Wonder,ATI VIP 

= G . . . . . . AX PC 

54h = T 132x25 . . . . . Lava Chrome II EGA 


= T 132x43 8x8 . . . . Paradise EGA-480 


= T 132x43 7x9 . 16/256K . B800 Paradise VGA 

= T 132x43 8x9 . 16/256K . B800 Paradise VGA on multisync 

= T 132x43 . . . . . Taxan 565 EGA 

= T 132x43 . . . . . AST VGA Plus 

= T 132x43 . . . . . Hewlett-Packard D1180A 

= T 132x43 7x9 . 16 . . AT&T VDC600 

= T 132x43 9x9 1188x387 16/256K . B800 WD90C 

= T 132x43 9x9 1188x387 16/256K . B800 Diamond Speedstar 24X 

= T 132x43 9x9 1188x387 16/256K . B800 Diamond Stealth 24 

= T 132x43 8x8 . . . B800 Diamond Stealth64 Video 2xx1 


= T 132x50 8x8 . 16 . A000 NCR 77C22 [9] 

= G 100x42 8x14 800x600 16 . A000 ATI EGA Wonder, VGA Wonder 

= G 100x42 8x14 800x600 16 . A000 ATI Ultra 8514A, ATI XL 

= G . . 800x600 256 . A000 Oak VGA 


55h = T 80x66 8x8 . 16/256K . A000 ATI VIP 

= T 132x25 8x14 . . . . Paradise EGA-480 


= T 132x25 7x16 . 16/256K . B800 Paradise VGA 

= T 132x25 8x16 . 16/256K . B800 Paradise VGA on multisync 

= T 132x25 . . . . . Taxan 565 EGA 

= T 132x25 . . . . . AST VGA Plus 

= T 132x25 . . . . . Hewlett-Packard D1180A 

= T 132x25 7x16 . 16 . . AT&T VDC600 

= T 132x25 8x16 . 16 . A000 NCR 77C22 [9] 

= T 132x25 9x16 1188x400 16/256K . B800 WD90C 



-36-


= T 132x25 9x16 1188x400 16/256K . 


B800 Diamond Speedstar 24X 

= T 132x25 9x16 1188x400 16/256K . B800 Diamond Stealth 24 

= T 132x25 8x16 . . . B800 Diamond Stealth64 Video 2xx1 




= G 128x48 8x16 1024x768 16/256K . A000 ATI VGA Wonder v4+ [5] 

= G . . 1024x768 16/256K . . ATI VGA Wonder Plus 

= G . . 1024x768 16/256K . . ATI Ultra 8514A,ATI XL 


56h = T 132x43 8x8 . 3??? 2 B000 NSI Smart EGA+ 

= T 132x43 7x9 . 4 . B000 Paradise VGA 

= T 132x43 8x9 . 4 . B000 Paradise VGA on multisync 

= T 132x43 . . mono . . Taxan 565 EGA 

= T 132x43 7x9 . 2 . . AT&T VDC600 


= T 132x50 8x8 . 4 . A000 NCR 77C22 [9] 


= G . . 1024x768 16 . A000 Oak VGA 


57h = T 132x25 8x14 . 3??? 4 B000 NSI Smart EGA+ 

= T 132x25 7x16 . 4 . B000 Paradise VGA 

= T 132x25 8x16 . 4 . B000 Paradise VGA on multisync 


= T 132x25 . . mono . . Taxan 565 EGA 

= T 132x25 7x16 . 2 . . AT&T VDC600 


= T 132x25 8x16 . 4 . A000 NCR 77C22 [9] 


58h = T 80x33 8x14 . 16 . B800 ATI EGA Wonder,ATI VIP 

= T 80x32 9x16 . 16 . . Genoa 6400 



= G 100x75 8x8 800x600 16/256K . A000 Paradise VGA 

= G 100x75 8x8 800x600 16 . . AT&T VDC600 

= G 100x75 8x8 800x600 16 . A000 NCR 77C22 [9] 

= G 100x75 8x8 800x600 16 . A000 Diamond Speedstar 24X 

= G 100x75 8x8 800x600 16/256K . A000 Paradise VGA, WD90C 

= G . . 800x600 16 . . AST VGA Plus, Compaq VGA 

= G . . 800x600 16 . . Dell VGA 

= G . . 800x600 16 . . Hewlett-Packard D1180A 



-37-


= G . . 800x600 ??? . . ELT VGA PLUS 16 


= G 100x37 8x16 800x600 16/256K . A000 Cirrus CL-GD5420/5422/5426 


59h = T 80x43 9x8 . . . . NEL Electronics BIOS 

= T 80x66 8x8 . 16/256K . A000 ATI VIP 


= G 100x75 8x8 800x600 2 . A000 Paradise VGA 

= G 100x75 8x8 800x600 2 . . AT&T VDC600 

= G . . 800x600 2 . . AST VGA Plus, Compaq VGA 

= G . . 800x600 2 . . Dell VGA 


= G 100x75 8x8 800x600 2 . A000 NCR 77C22 [9] 


5Ah = T 80x60 8x8 . . . . NEL Electronics BIOS 


= G 128x48 8x16 1024x768 2 . A000 NCR 77C22 [9] 

5Bh = T 80x30 8x16 . . . B800 ATI VGA Wonder (undoc) 

= G . . 640x350 256 . . Genoa 6400 

= G 80x25 8x16 640x400 32K . A000 Oak OTI-067/077 chips [8] 

= G . . 800x600 16 . . Maxxon, SEFCO TVGA, Imtec 

= G 100x75 8x8 800x600 16/256K . A000 Trident TVGA 8800, 8900 

= G . . 800x600 ??? . . Vobis MVGA 

= G 100x37 8x16 800x600 . . . NEL Electronics BIOS 

= G 128x48 8x16 1024x768 16 . A000 NCR 77C22 [1,9] 

5Ch = T 100x37 8x16 . . . . NEL Electronics BIOS 

= G . . 640x400 256 . . Logix, ATI Prism Elite 


= G 80x25 8x16 640x400 256/256K . A000 Zymos Poach, Hi Res 512 

= G 80x25 8x16 640x400 256/256K . A000 Trident TVGA 8800/8900 

= G 80x30 8x16 640x480 256 . . Genoa 6400 

= G 80x30 8x16 640x480 32K . A000 Oak OTI-077 chipset [8] 

= G 100x75 8x8 800x600 256 . A000 NCR 77C22 [9] 

= G 100x75 8x8 800x600 256/256K . A000 WD90C 

= G 100x75 8x8 800x600 256/256K . A000 Diamond Speedstar 24X 


5Dh = T 100x75 8x8 . . . . NEL Electronics BIOS 

= G 80x25 8x14 640x350 64K . . STB Lightspeed ET4000/W32P 




= G 80x30 8x16 640x480 256/256K . A000 Trident TVGA 8800 (512K) 



-38-


= G 128x48 8x16 1024x768 16 . A000 NCR 77C22 [9] 


= G 128x48 8x16 1024x768 16/256K . A000 WD90C 



5Eh = G . . 640x400 256 . . Paradise VGA,VEGA VGA 

= G . . 640x400 256 . . AST VGA Plus, NCR 77C22 

= G . . 640x400 256 . . Compaq VGA, Dell VGA 

= G 80x25 8x16 640x400 256 . . AT&T VDC600 

= G 80x25 8x16 640x400 256 . A000 NCR 77C22 [9] 

= G 80x25 8x16 640x400 256/256K . A000 WD90C 




= G 100x75 8x8 800x600 256 . . Genoa 6400 

= G 100x75 8x8 800x600 256/256K . A000 Zymos Poach, Trident 8900 

= G 100x75 8x8 800x600 256/256K . A000 Hi Res 512 

5Fh = G 80x25 8x16 640x400 64K . . STB Lightspeed ET4000/W32P 

= G . . 640x480 256 . . Paradise VGA 

= G . . 640x480 256 . . AST VGA Plus, NCR 77C22 

= G . . 640x480 256 . . Compaq VGA, Dell VGA 


= G 80x30 8x16 640x480 256 . . AT&T VDC600 (512K) 

= G 80x30 8x16 640x480 256 . A000 NCR 77C22 [9] 

= G 80x30 8x16 640x480 256/256K . A000 WD90C 




= G . . 1024x768 16 . . Maxxon, Imtec 

= G 128x48 8x16 1024x768 16 . . Genoa 6400 


= G 128x48 8x16 1024x768 16/256K . A000 Trident TVGA 88/8900 512K 

60h = T 132x25 8x14 . 16/64 8 B800 Quadram Ultra VGA 

= T 132x25 8x14 . 16 . . Genoa 6400 

= T 132x25 8x14 . 16 . . Genoa SuperEGA BIOS 3.0+ 


= T 132x25 8x16 1056x400 16 . B800 Chips&Technologies chipset 

= G 80x??? . ???x400 . . . Corona/Cordata BIOS 4.10+ 

= G 80x25 8x16 640x400 256 1 A000 Ahead A, Ahead B 

= G . . 752x410 . . . VEGA VGA 

= G . . 752x410 16 . . Tatung VGA 

= G . . 752x410 16 . . Video7 V-RAM VGA 



-39-


= G 128x48 8x16 1024x768 4/256K . 


A000 Trident TVGA 8900 

= G 128x48 8x16 1024x768 256/256K . A000 WD90C 





= T 132x29 8x8 . 16 . . Genoa 6400 



= T 132x50 8x8 1056x400 16 . B800 Chips&Technologies chipset 

= T 132x50 8x16 1056x800 16 . B800 Chips&Technologies 64310 

= G . . ???x400 . . . Corona/Cordata BIOS 4.10+ 

= G 80x25 8x16 640x400 256 . A000 ATI VGA Wonder,VGA Wonder+ 

= G 80x25 8x16 640x400 256 . A000 ATI Ultra 8514A,ATI XL 


= G 80x30 8x16 640x480 256 1 A000 Ahead A, Ahead B (512K) 

= G . . 720x540 . . . VEGA VGA 

= G . . 720x540 16 . . Tatung VGA 


= G 96x64 8x16 768x1024 16/256K . A000 Trident TVGA 88/8900 512K 

= G 128x48 8x16 1024x768 256 . A000 NCR 77C22 [1,9] 



= T 132x32 8x12 . 16 . . Genoa 6400 


= T 132x43 8x8 1056x344 16 . B800 C&T 82C450 BIOS 

= G . . 640x450 16 . . Cirrus 510/520 chipset 



= G 80x30 8x16 640x480 32K . A000 WD90C 

= G 80x30 8x16 640x480 32K . A000 Diamond Speedstar 24X 

= G . . 800x600 . . . VEGA VGA 

= G . . 800x600 16 . . Tatung VGA 



= G 128x48 8x16 1024x768 256/256K . A000 Trident TVGA 8900, Zymos 

= G 128x48 8x16 1024x768 256 . A000 NCR 77C22 [9] 


= T 132x44 8x8 . 16 . . Genoa 6400 


= G . . 720x540 16 . . MORSE VGA 



-40-


= G . . 720x540 


16 . . Cirrus 510/520 chipset 



= G . . 800x600 32K . A000 WD90C 

= G . . 800x600 32K . A000 Diamond Speedstar 24X 

= G 128x48 7x16 1024x768 256 1 A000 Ahead B (1MB) 


64h = T 132x60 8x8 . 16 . . Genoa 6400 

= T 80x43 8x8 528x344 16 . B800 C&T 82C450 BIOS 

= G . . 640x480 64K . A000 Cirrus CL-GD 5422/5426 

= G . . 800x600 16 . . MORSE VGA 


= G . . 800x600 ??? . . SAMPO-Mira VGA 


= G 128x48 8x16 1024x768 256 . A000 ATI VGA Wonder Plus,ATI XL 

= G 160x64 8x16 1280x1024 16/256K . A000 WD90C [1] 

= G 160x64 8x16 1280x1024 16/256K . A000 Diamond Speedstar 24X [1] 

65h = T 80x50 8x8 528x400 16 . B800 C&T 82C450 BIOS 



= G 128x48 8x16 1024x768 16 . A000 ATI VGA Wonder 

66h = T 80x50 8x8 640x400 16/256K . B800 WD90C 


= G . . 640x400 256 . . Tatung VGA 



67h = T 80x43 8x8 640x344 16/256K . B800 WD90C 




= G 128x48 8x16 1024x768 4 . A000 ATI VGA Wonder 

= G 160x64 8x16 1280x1024 16 . A000 NCR 77C22 [1,9] 

68h = G 80x25 8x16 640x400 . . A000 Diamond Stealth64 Video 2xx1 

69h = T 132x50 8x8 1056x400 16/256K . B800 WD90C 



= G . . 720x540 256 . A000 Video7 V-RAM VGA 

6Ah = G . . 800x600 16 . A000 VESA standard interface 

= G 100x75 8x8 800x600 16 . A000 Genoa 6400 


= G . . 800x600 16 . A000 Ahead A 



-41-


= G 100x75 8x8 800x600 16 1 


A000 Ahead B (VESA) [see 71h] 

= G . . 800x600 16 . . Zymos Poach, Hi Res 512 

= G . . 800x600 16 . . Epson LT-386SX in CRT Mode 

= G . . 800x600 16 . . Compuadd 316SL in CRT Mode 


= G 100x37 8x16 800x600 16 . A000 Diamond Stealth64 Video 2xx1 

= G 100x42 8x14 800x600 . . A000 ATI VGA Wonder (undoc) 

= G . . 800x600 16 . A000 Chips&Technologies chipset 

= G 160x64 8x16 1280x1024 256 . A000 NCR 77C22 [1,9] 

6Bh = T 100x37 8x16 . 16 . . Genoa 6400 



6Ch = G 80x30 8x16 640x480 16M . A000 Trident 8900CL/BIOS C04 

= G 100x75 8x8 800x600 256 . . Genoa 6400 


= G 160x60 8x16 1280x960 16/256K . A000 WD90C [1] 

= G 160x60 8x16 1280x960 16/256K . A000 Diamond Speedstar 24X [1] 

= G 160x64 8x16 1280x1024 16/256K . A000 Cirrus CL-GD 5422/5426 [1] 

6Dh = G 80x25 8x14 640x350 64K . A000 STB Lightspeed ET4000/W32P 


= G 160x64 8x16 1280x1024 256/256K . A000 Cirrus CL-GD 5422/5426 [1] 

6Eh = G 40x25 8x8 320x200 64K . A000 Cirrus CL-GD 5422/5426 


6Fh = G 40x25 8x8 320x200 16M . A000 Cirrus CL-GD 5422/5426 


70h = extended mode set (see AX=0070h) . Everex Micro Enhancer EGA 

= T 40x25 8x8 . 16 8 B800 Quadram (CGA double scan) 

= T 40x25 8x8 (CGA dblscan) . . Genoa SuperEGA BIOS 3.0+ 

= G . . 360x480 256 . . Cirrus 510/520/5320 chips 

= G 90x28 8x14 720x392 16 1 A000 Ahead B 


= G 100x38 8x16 800x600 16 . A000 C&T chipset, Cardinal 

= G . . 1024x480 256 . A000 Trident 8900C BIOS C3.0 

71h = T 80x25 8x8 . 16 8 B800 Quadram (CGA double scan) 

= T 80x25 8x8 (CGA dblscan) . . Genoa SuperEGA BIOS 3.0+ 


= G 80x30 8x16 640x480 16M . A000 Cirrus CL-GD 5422/5426 


= G 100x35 8x16 800x600 16/64 . A000 NSI Smart EGA+ 

= G 100x75 8x8 800x600 16 1 A000 Ahead B (same as 6Ah) 

= G . . 960x720 16 . . C&T chipset, Cardinal 



-42-


= G . . 1024x480 256 . 


A000 Trident 8900C BIOS C3.0 

72h = T 80x60 8x8 . 16 . B800 Quadram Ultra VGA 

= T 80x60 8x8 . 16 . B800 Genoa 6400 

= T 80x60 8x8 . 16 . B800 Genoa SuperEGA BIOS 3.0+ 


= G 80x25 8x19 640x480 16 1 A000 DOS/V w/ any VGA 


= G . . 640x480 32K . A000 ATI 

= G . . 640x480 16M . A000 WD90C 

= G . . 640x480 16M . A000 Diamond Speedstar 24X 


= G 128x48 8x16 1024x768i 16 . A000 C&T 82C450 BIOS 

= G 128x48 8x16 1024x768 16 . A000 C&T 65530 BIOS (multisync) 

73h = G 80x60 8x8 640x480 16 . A000 Quadram Ultra VGA 

= G 80x60 8x8 640x480 16 . . Genoa 6400 

= G 80x60 8x8 640x480 16 . . Genoa SuperEGA BIOS 3.0+ 


= T 80x25 8x19 640x475 16 1 none DOS/V, emulated in VGA graph 


= T 80x66 8x8 . 16 . B800 Genoa 6400 

= T 80x66 8x8 . 16 . B800 Genoa SuperEGA BIOS 3.0+ 

= G . . 640x400 2 . B800 Toshiba 3100 AT&T mode 

= G 80x30 8x16 640x480 32K . A000 Trident 8900C/BIOS C03 



= G . . 1024x768 64K . A000 Cirrus CL-GD 5422/5426 [1] 

75h = G 80x30 8x16 640x480 64K . A000 Trident 8900C/BIOS C03 

= G 80x66 . 640x528 16??? . A000 Quadram Ultra VGA 

= G 80x66 . 640x528 16 . . Genoa SuperEGA BIOS 3.0+ 


= G 128x48 8x16 1024x768 4 1 A000 Ahead B 

= G 128x48 8x16 1024x768 16 . A000 Chips&Technologies 64310 


= T 94x29 8x14 . . . . Genoa SuperEGA BIOS 3.0+ 


= G 128x48 8x16 1024x768 2 1 A000 Ahead B 


= G 160x64 8x16 1280x1024 16 . A000 Chips&Technologies 64310 [1] 

77h = G 94x29 . 752x410 16??? . A000 Quadram Ultra VGA 

= G 94x29 . 752x410 16 . . Genoa SuperEGA BIOS 3.0+ 




-43-


= G 128x48 8x16 1024x768 . . 


A000 Diamond Stealth64 Video 2xx1 

78h = T 100x37 8x16 . 16 . . Genoa 6400 

= T 100x75 8x8 . 16 . B800 Quadram Ultra VGA 


= G . . 640x400 256 . . STB VGA/EM-16 Plus 

= G 80x25 8x16 640x400 256 . . Cardinal, C&T chipset 



79h = G 80x30 8x16 640x480 256 . . Cardinal, C&T chipset 



= G 100x75 8x8 800x600 16 . . Genoa SuperEGA BIOS 3.0+ 

= G 100x75 8x8 800x600 16 . . Genoa 6400 

7Ah = T 114x60 8x8 . 16 . B800 Quadram Ultra VGA 



7Bh = G . . 800x600 256 . . C&T chipset, Cardinal 


= G . . 912x480 16 . . Genoa SuperEGA BIOS 3.0+ 

7Ch = G . . 512x512 16 . . Genoa 

= G 100x37 8x16 800x600 256 . . C&T 82C453/F65530 chipsets 


= G 200x75 8x16 1600x1200 . [16] . A000 Diamond Stealth64 Video 2xx1 

7Dh = G 64x32 8x16 512x512 256 . . Genoa 

7Eh = special mode set (see AX=007Eh) . Paradise VGA, AT&T VDC600 

= G 80x25 8x16 640x400 256 . . Genoa 6400 

= G . . 1024x768 256 . . C&T 82C453 chipset 



7Fh = special function set (see AX=007Fh/BH=00h) Paradise VGA, AT&T VDC600 

= G 128x48 8x16 1024x768 4 . . Genoa 6400 


82h = T 80x25 . . B&W . . AT&T VDC overlay mode [6] 

83h = T 80x25 . . . . . AT&T VDC overlay mode [6] 

86h = G . . 640x200 B&W . . AT&T VDC overlay mode [6] 

88h = G 90x43 8x8 720x348 mono . B000 Hercules + MSHERC.COM 

C0h = G . . 640x400 2/prog palette . AT&T VDC overlay mode [6] 

= G . . 640x400 2/prog palette . Olivetti Quaderno overlay 

C4h = disable output . . . . AT&T VDC overlay mode [6] 

C8h = G 80x50 8x8 640x400 2 . B800 Olivetti Quaderno overlay 

D0h = G . . 640x400 2 . B800 DEC VAXmate AT&T mode 



-44-




Notes: 

[1] interlaced only 

[2] for ATI EGA Wonder, mode 08h is only valid if SMS.COM is loaded resident. 

SMS maps mode 08h to mode 27h if the byte at location 0040:0063 is 0B4h, 

otherwise to mode 23h, thus selecting the appropriate (monochrome or 

color) 132x25 character mode. 

for ATI VGA Wonder, mode 08h is the same, and only valid if VCONFIG loaded 

resident 

[3] early XGA boards support 132-column text but do not have this BIOS mode 

[4] DESQview intercepts calls to change into these two modes (21h is page 0, 

22h is page 1) even if there is no Hercules graphics board installed 

[5] ATI BIOS v4-1.00 has a text-scrolling bug in this mode 

[6] for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h, 

40h, or 44h 

[7] BIOS text support is broken in this undocumented mode; scrolling moves 

only about 1/3 of the screen (and does even that portion incorrectly), 

while screen clears only clear about 3/4. 

[8] The Oak OTI-037/067/077 modes are present in the Oak VGA BIOS, which OEMs 

may choose to use only partially or not at all; thus, not all Oak boards 

support all "Oak" modes listed here 

[9] this card uses the full 128K A000h-BFFFh range for the video buffer, 

precluding the use of a monochrome adapter in the same system 

[10] mode 17h supported by Tseng ET4000 BIOS 8.01X dated 1990/09/14, but not 

v8.01X dated 1992/02/28; mode 21h supported by 1992/02/28 version but not 

1990/09/14 version 

[11] HERKULES simulates a 90x45 text mode in Hercules graphics mode; the 

installation check for HERKULES.COM is the signature "Herkules" two 

bytes beyond the INT 10 handler 

[12] The Realtek RTVGA BIOS v3.C10 crashes when attempting to switch into 

modes 21h or 27h; this version of the BIOS also sets the BIOS data area 

incorrectly for extended text modes, resulting in scrolling after only 

24 lines (the VMODE.EXE utility does set the data area correctly) 

[13] The Tandy 1000SL/TL BIOS does not actually support this mode 

[14] HERCULES.COM is a graphics-mode BIOS extension for Hercules-compatible 

graphics cards by Soft Warehouse, Inc. Its installation check is to 

test whether the word preceding the INT 10 handler is 4137h. 

[15] The Hercules-graphics video modes for HERCBIOS (shareware by Dave 

Tutelman) may be changed by a command-line switch; the 90x43 

character-cell mode's number is always one higher than the 90x29 mode 

(whose default is mode 08h) 

[16] Stealth64 Video 2001-series BIOS v1.03 reports 76 lines for mode 7Ch, 


-45-




resulting in incorrect scrolling for TTY output (scrolling occurs only 

after the end of the 76th line, which is not displayed) 

[17] For 43-line text on EGA or 43/50-line text on VGA, you must load an 8x8 

font using AX=1102h after switching to mode 3; VGA may also require 

using INT 10/AH=12h/BL=30h 

SeeAlso: #00011,#00083,#00191 

Index: video modes 

Index: installation check;HERKULES|installation check;HERCULES.COM 

--------V-100070----------------------------- 

INT 10 - VIDEO - Everex Micro Enhancer EGA/Viewpoint VGA - EXTENDED MODE SET 

AX = 0070h 

BL = mode (see #00011) 

Desc: specify a proprietary display mode on the Everex Micro Enhancer or 

Viewpoint video adapters 

SeeAlso: AH=00h,AX=6F05h,AX=7000h/BX=0004h,AH=FFh"GO32" 


(Table 00011) 

Values for Everex video mode: 

text/ text pixel pixel colors disply scrn monitor adapter 


00h = G . . 640x480 16 . . multisync EGA,VGA 



03h = T 80x34 . . . . . multisync EGA,VGA 

04h = T 80x60 . . . . . multisync EGA,VGA 

05h = T 94x29 . . . . . multisync EGA only 

06h = T 94x51 . . . . . multisync EGA only 

07h = T 100x43 8x14 . 16 . . . VGA only 

08h = T 100x75 8x8 . 16 . . . VGA only 

09h = T 80x44 . . . . . EGA EGA only 

0Ah = T 132x25 . . . . . EGA EGA,VGA 

0Bh = T 132x44 . . . . . EGA EGA,VGA 

0Ch = T 132x25 . . . . . CGA EGA only 

0Dh = T 80x44 . . . . . mono EGA only 

0Eh = T 132x25 . . . . . mono 

0Fh = T 132x44 . . . . . mono 

10h = reserved 

11h = G . . 1280x350 4 . . . EGA only 

12h = G . . 1280x600 4 . . . EGA only 

13h = G . . 640x350 256 . . . EGA,EV673 

14h = G . . 640x400 256 . . . 

-46-



15h = G . . 512x480 256 . . . 


16h = T 80x30 8x16 . 256 . . . VGA only 

18h = T 100x27 8x16 . 16 . . . VGA only 

20h = G . . 1024x768 16 . . . Everex 629,678 

. . . . . . . Everex EV-673 

21h = T 160x64 8x16 1280x1024 16 . . . 1MB VGA only 

30h = G . . 640x480 256 . . . Everex 629,678 

. . . . . . . Everex EV-673 

31h = G . . 800x600 256 . . . Everex 629,678 

. . . . . . . Everex EV-673 

32h = G 128x48 8x16 1024x768 256 . . . 1MB VGA only 

40h = T 132x30 8x16 . 16 . . . VGA only 

50h = T 132x32 8x16 . mono . . . VGA only 

62h = G 40x25 8x8 320x200 32K . . . Vwpt TC (EV629) 

70h = G 64x30 8x16 512x480 32K . . . Viewpoint TC 

71h = G 80x30 8x16 640x480 32K . . . Viewpoint TC 

76h = G 64x30 8x16 512x480 16M . . . Viewpoint TC 

77h = G 80x30 8x16 640x480 16M . . . Viewpoint TC 

SeeAlso: #00010,#00191 

Index: video modes;Everex 

--------V-10007E----------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - SET SPECIAL MODE 

AX = 007Eh 

BX = horizontal dimension of the mode desired 

CX = vertical dimension of the mode desired 

(both BX/CX in pixels for graphics modes, rows for alpha modes) 

DX = number of colors of the mode desired (0000h for monochrome modes) 

Return: BH = 7Eh if successful (Paradise VGA) 

AL = 7Eh if successful (AT&T VDC600) 

Desc: specify a display mode by resolution rather than mode number 

SeeAlso: AH=00h,AX=0070h,AX=007Fh/BH=00h,AX=6F05h,AH=FFh"GO32" 

Index: video modes;Paradise|video modes;AT&T 

--------V-10007FBH00------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - SET VGA OPERATION 

AX = 007Fh 

BH = 00h 

Return: AL = 7Fh if successful (AT&T VDC600) 

BH = status (Paradise/Dell) 

00h invalid function 

7Fh successful 

SeeAlso: AX=007Fh/BH=01h,AX=007Fh/BH=02h 


-47-




--------V-10007FBH01------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - SET NON-VGA OPERATION 

AX = 007Fh 

BH = 01h 





Note: color modes (0,1,2,3,4,5,6) will set non-VGA CGA operation, monochrome 

mode 7 will set non-VGA MDA/Hercules operation 


--------V-10007FBH02------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - QUERY MODE STATUS 

AX = 007Fh 

BH = 02h 





---if successful--- 

BL = 00h if operating in VGA mode, 01h if non-VGA mode 

CH = total video RAM size in 64k byte units 

CL = video RAM used by the current mode 

Note: under Novell DOS 7 TaskMgr Multitasker, this call always returns 0K 

video memory in CX 


--------V-10007FBH03------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - LOCK CURRENT MODE 

AX = 007Fh 

BH = 03h 





Desc: allows current mode (VGA or non-VGA) to survive re-boot 

SeeAlso: AX=007Eh,AX=007Fh/BH=04h,AX=007Fh/BH=06h,AH=FFh"Oak" 

--------V-10007FBH04------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - ENTER MDA EMULATION MODE 

AX = 007Fh 

BH = 04h 



-48-








--------V-10007FBH05------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - ENTER CGA EMULATION MODE 

AX = 007Fh 

BH = 05h 






--------V-10007FBH06------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - ENTER MONOCHROME VGA MODE 

AX = 007Fh 

BH = 06h 





Note: this function also switches to video mode 7 


--------V-10007FBH07------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - ENTER COLOR VGA MODE 

AX = 007Fh 

BH = 07h 





Note: this function also switches to video mode 3 


--------V-10007F----------------------------- 

INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - EXTENDED DATA REGISTER ACCESS 

AX = 007Fh 

BH = function 

0Ah,0Bh,0Ch,0Dh,0Eh,0Fh WRITE PARADISE REGISTERS 0,1,2,3,4,5 

(port 03CEh indices 0Ah,0Bh,0Ch,0Dh,0Eh,0Fh) 

BL = value to set in the paradise register 

1Ah,1Bh,1Ch,1Dh,1Eh,1Fh READ PARADISE REGISTERS 0,1,2,3,4,5 


-49-




(port 03CEh indices 0Ah,0Bh,0Ch,0Dh,0Eh,0Fh) 

Return: BL = value of the paradise register 

BH = 7Fh if successful 

29h-2Fh ??? (Paradise VGA for Dell, 1991/07/24) 






--------V-10007FBH60------------------------- 

INT 10 - Paradise VGA - ??? 

AX = 007Fh 

BH = 60h 

BL = ??? (00h-13h) 

??? 

Return: BH = status (00h failed or not supported, 7Fh successful) 

??? 

Note: this function is supported by the 1993/5/14 ROM for the Dell 486D 

SeeAlso: AX=007Fh/BH=61h 

--------V-10007FBH61------------------------- 


AX = 007Fh 

BH = 61h 

ES:DI -> buffer for list of ??? (see #00012) 


??? 


SeeAlso: AX=007Fh/BH=60h 


Format of Paradise VGA list entry: 


00h BYTE ??? or 00h if end of list 

01h BYTE ??? 

02h WORD ??? 

04h WORD ??? 

06h WORD ??? 

--------V-10007FBXA500----------------------- 


AX = 007Fh 

BX = A500h 

??? 

-50-





??? 


SeeAlso: AX=007Fh/BH=A6h 

--------V-10007FBHA5------------------------- 


AX = 007Fh 

BH = A5h 

BL = ??? 

bits 3-0: ??? (0-4) 

bits 5,4: ??? 

??? 


??? 


--------V-10007FBHA6------------------------- 


AX = 007Fh 

BH = A6h 

??? 


??? 


SeeAlso: AX=007Fh/BH=A5h 

--------V-1001------------------------------- 

INT 10 - VIDEO - SET TEXT-MODE CURSOR SHAPE 

AH = 01h 

CH = cursor start and options (see #00013) 

CL = bottom scan line containing cursor (bits 0-4) 


Desc: specify the starting and ending scan lines to be occupied by the 

hardware cursor in text modes 

Notes: buggy on EGA systems--BIOS remaps cursor shape in 43 line modes, but 

returns unmapped cursor shape 

UltraVision scales size to the current font height by assuming 14-line 

monochrome and 8-line color fonts; this call is not valid if cursor 

emulation has been disabled 

applications which wish to change the cursor by programming the 

hardware directly on EGA or above should call INT 10/AX=1130h or 

read 0040h:0085h first to determine the current font height 

on some adapters, setting the end line greater than the number of lines 


-51-




in the font will result in the cursor extending to the top of the 

next character cell on the right 

BUG: AMI 386 BIOS and AST Premier 386 BIOS will lock up the system if AL 

is not equal to the current video mode 

SeeAlso: AH=03h,AX=CD05h,AH=12h/BL=34h,#03885 


Bitfields for cursor start and options: 


7 should be zero 

6,5 cursor blink 

(00=normal, 01=invisible, 10=erratic, 11=slow) 

(00=normal, other=invisible on EGA/VGA) 

4-0 topmost scan line containing cursor 

--------V-1002------------------------------- 

INT 10 - VIDEO - SET CURSOR POSITION 

AH = 02h 

BH = page number 

0-3 in modes 2&3 


0 in graphics modes 

DH = row (00h is top) 

DL = column (00h is left) 


SeeAlso: AH=03h,AH=05h,INT 60/DI=030Bh,MEM 0040h:0050h 

--------V-1003------------------------------- 

INT 10 - VIDEO - GET CURSOR POSITION AND SIZE 

AH = 03h 




0 in graphics modes 

Return: AX = 0000h (Phoenix BIOS) 

CH = start scan line 

CL = end scan line 

DH = row (00h is top) 

DL = column (00h is left) 

Notes: a separate cursor is maintained for each of up to 8 display pages 

many ROM BIOSes incorrectly return the default size for a color display 

(start 06h, end 07h) when a monochrome display is attached 

With PhysTechSoft's PTS ROM-DOS the BH value is ignored on entry. 

SeeAlso: AH=01h,AH=02h,AH=12h/BL=34h,MEM 0040h:0050h,MEM 0040h:0060h 

-52-




--------V-1004------------------------------- 

INT 10 - VIDEO - READ LIGHT PEN POSITION (except VGA) 

AH = 04h 

Return: AH = light pen trigger flag 

00h not down/triggered 

01h down/triggered 

DH,DL = row,column of character light pen is on 

CH = pixel row (graphics modes 04h-06h) 

CX = pixel row (graphics modes with >200 rows) 

BX = pixel column 

Desc: determine the current position and status of the light pen (if 

present) 

Notes: on a CGA, returned column numbers are always multiples of 2 (320- 

column modes) or 4 (640-column modes) 

returned row numbers are only accurate to two lines 

--------V-1004------------------------------------ 

INT 10 - HUNTER 16 - GET CURSOR ADDRESS 

AH = 04h 

BH = page 

Return: DH = row (0..24) 

DL = column (0..79) 

CH = cursor pixel Y-address (0..199) 

CL = cursor pixel X-address (0..639) 

Notes: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family 

members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk. 

pixel coordinates are for the lower left corner of the character cell 

containing the cursor 

SeeAlso: AH=60h"HUNTER" 

--------V-1005------------------------------- 

INT 10 - VIDEO - SELECT ACTIVE DISPLAY PAGE 

AH = 05h 

AL = new page number (00h to number of pages - 1) (see #00010) 


Desc: specify which of possibly multiple display pages will be visible 

Note: to determine whether the requested page actually exists, use AH=0Fh 

to query the current page after making this call 

SeeAlso: AH=0Fh,AH=43h,AH=45h,MEM 0040h:0062h,MEM 0040h:004Eh 

--------V-100500----------------------------- 

INT 10 - VIDEO - Corona/Cordata BIOS v4.10+ - SET GRAPHICS BITMAP BUFFER 

AX = 0500h 

BX = segment of buffer 


-53-





Desc: set the address of graphics bitmap buffer for video modes 60h and 61h 

SeeAlso: AX=050Fh"Corona" 

--------V-10050F----------------------------- 

INT 10 - VIDEO - Corona/Cordata BIOS v4.10+ - GET GRAPHICS BITMAP BUFFER 

AX = 050Fh 

Return: DX = segment of graphics bitmap buffer 

Desc: get the address of graphics bitmap buffer for video modes 60h and 61h 

SeeAlso: AX=0500h"Corona" 

--------V-100580----------------------------- 

INT 10 - VIDEO - PCjr, Tandy 1000 - GET CRT/CPU PAGE REGISTERS 

AX = 0580h 

Return: BH = CRT page register 

BL = CPU page register 

Notes: the CPU page determines which 16K block of the first 128K of physical 

memory will be mapped at B800h by the hardware 

the CRT page determines the start address of the memory used by the 

video controller 

SeeAlso: AH=05h"SET CRT/CPU" 

--------V-1005------------------------------- 

INT 10 - VIDEO - PCjr, Tandy 1000 - SET CRT/CPU PAGE REGISTERS 

AH = 05h 

AL = subfunction 

81h set CPU page register 

BL = CPU page 

82h set CRT page register 

BH = CRT page 

83h set both CPU and CRT page registers 

BL = CPU page 

BH = CRT page 


Notes: the CPU page determines which 16K block of the first 128K of physical 

memory will be mapped at B800h by the hardware 

the CRT page determines the start address of the memory used by the 

video controller 


--------V-1006------------------------------- 

INT 10 - VIDEO - SCROLL UP WINDOW 

AH = 06h 

AL = number of lines by which to scroll up (00h = clear entire window) 

BH = attribute used to write blank lines at bottom of window 


-54-




CH,CL = row,column of window's upper left corner 

DH,DL = row,column of window's lower right corner 


Note: affects only the currently active page (see AH=05h) 

BUGS: some implementations (including the original IBM PC) have a bug which 

destroys BP 

the Trident TVGA8900CL (BIOS dated 1992/9/8) clears DS to 0000h when 

scrolling in an SVGA mode (800x600 or higher) 

SeeAlso: AH=07h,AH=12h"Tandy 2000",AH=72h,AH=73h,AX=7F07h,INT 50/AX=0014h 

--------V-1007------------------------------- 

INT 10 - VIDEO - SCROLL DOWN WINDOW 

AH = 07h 

AL = number of lines by which to scroll down (00h=clear entire window) 

BH = attribute used to write blank lines at top of window 

CH,CL = row,column of window's upper left corner 

DH,DL = row,column of window's lower right corner 


Note: affects only the currently active page (see AH=05h) 

BUGS: some implementations (including the original IBM PC) have a bug which 

destroys BP 

the Trident TVGA8900CL (BIOS dated 1992/9/8) clears DS to 0000h when 

scrolling in an SVGA mode (800x600 or higher) 

SeeAlso: AH=06h,AH=12h"Tandy 2000",AH=72h,AH=73h,INT 50/AX=0014h 

--------V-1008------------------------------- 

INT 10 - VIDEO - READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION 

AH = 08h 

BH = page number (00h to number of pages - 1) (see #00010) 

Return: AH = character's attribute (text mode only) (see #00014) 

AH = character's color (Tandy 2000 graphics mode only) 

AL = character 

Notes: for monochrome displays, a foreground of 1 with background 0 is 

underlined 

the blink bit may be reprogrammed to enable intense background colors 

using AX=1003h or by programming the CRT controller 

the foreground intensity bit (3) can be programmed to switch between 

character sets A and B on EGA and VGA cards, thus enabling 512 

simultaneous characters on screen. In this case the bit's usual 

function (intensity) is regularly turned off. 

in graphics modes, only characters drawn with white foreground pixels 

are matched by the pattern-comparison routine 

on the Tandy 2000, BH=FFh specifies that the current page should be 


-55-




used 

because of the IBM BIOS specifications, there may exist some clone 

BIOSes which do not preserve SI or DI; the Novell DOS kernel 

preserves SI, DI, and BP before many INT 10h calls to avoid problems 

due to those registers not being preserved by the BIOS. 

BUG: some IBM PC ROM BIOSes destroy BP when in graphics modes 

SeeAlso: AH=09h,AX=1003h,AX=1103h,AH=12h/BL=37h,AX=5001h 


Bitfields for character's display attribute: 


7 foreground blink or (alternate) background bright (see also AX=1003h) 

6-4 background color (see #00015) 

3 foreground bright or (alternate) alternate character set (see AX=1103h) 

2-0 foreground color (see #00015) 

SeeAlso: #00026 

(Table 00015) 

Values for character color: 

Normal Bright 

000b black dark gray 

001b blue light blue 

010b green light green 

011b cyan light cyan 

100b red light red 

101b magenta light magenta 

110b brown yellow 

111b light gray white 

--------V-1009------------------------------- 

INT 10 - VIDEO - WRITE CHARACTER AND ATTRIBUTE AT CURSOR POSITION 

AH = 09h 

AL = character to display 


background color in 256-color graphics modes (ET4000) 

BL = attribute (text mode) or color (graphics mode) 

if bit 7 set in




current row 

With PhysTechSoft's PTS ROM-DOS the BH, BL, and CX values are ignored 

on entry. 

SeeAlso: AH=08h,AH=0Ah,AH=4Bh"GRAFIX",INT 17/AH=60h,INT 1F"SYSTEM DATA" 

SeeAlso: INT 43"VIDEO DATA",INT 44"VIDEO DATA" 

--------V-100A------------------------------- 

INT 10 - VIDEO - WRITE CHARACTER ONLY AT CURSOR POSITION 

AH = 0Ah 



background color in 256-color graphics modes (ET4000) 

BL = attribute (PCjr, Tandy 1000 only) or color (graphics mode) 

if bit 7 set in




SeeAlso: AH=0Bh/BH=00h,MEM 0040h:0066h 

--------V-100B--BH02------------------------- 

INT 10 - Tandy 2000 - VIDEO - SET PALETTE ENTRY 

AH = 0Bh 

BH = 02h 

BL = palette entry number 

AL = new color value for palette entry 


Note: this interrupt is identical to INT 52 for Tandy 2000 

SeeAlso: INT 10/AH=00h,INT 10/AH=0Bh/BH=01h,INT 52"Tandy 2000" 

--------V-100C------------------------------- 

INT 10 - VIDEO - WRITE GRAPHICS PIXEL 

AH = 0Ch 


AL = pixel color 

if bit 7 set, value is XOR'ed onto screen except in 256-color modes 

CX = column 

DX = row 


Desc: set a single pixel on the display in graphics modes 

Notes: valid only in graphics modes 

BH is ignored if the current video mode supports only one page 

SeeAlso: AH=0Dh,AH=46h 

--------V-100D------------------------------- 

INT 10 - VIDEO - READ GRAPHICS PIXEL 

AH = 0Dh 


CX = column 

DX = row 

Return: AL = pixel color 

Desc: determine the current color of the specified pixel in grahics modes 

Notes: valid only in graphics modes 

BH is ignored if the current video mode supports only one page 

SeeAlso: AH=0Ch,AH=47h 

--------V-100E------------------------------- 

INT 10 - VIDEO - TELETYPE OUTPUT 

AH = 0Eh 

AL = character to write 


BL = foreground color (graphics modes only) 



-58-




Desc: display a character on the screen, advancing the cursor and scrolling 

the screen as necessary 

Notes: characters 07h (BEL), 08h (BS), 0Ah (LF), and 0Dh (CR) are interpreted 

and do the expected things 

IBM PC ROMs dated 1981/4/24 and 1981/10/19 require that BH be the same 

as the current active page 

BUG: if the write causes the screen to scroll, BP is destroyed by BIOSes 

for which AH=06h destroys BP 

SeeAlso: AH=02h,AH=06h,AH=0Ah 

--------b-100E--CXABCD----------------------- 

INT 10 - V20-XT-BIOS - TELETYPE OUTPUT WITH ATTRIBUTE 

AH = 0Eh 

CX = ABCDh 

BP = ABCDh 

AL = character to write 


BL = foreground color (text modes as well as graphics modes) 


Program: V20-XT-BIOS is a ROM BIOS replacement with extensions by Peter 

Koehlmann / c't magazine 

Desc: display a character on the screen, advancing the cursor and scrolling 

the screen as necessary 

Notes: characters 07h (BEL), 08h (BS), 0Ah (LF), and 0Dh (CR) are interpreted 

and do the expected things 

SeeAlso: INT 15/AH=84h"V20-XT-BIOS" 

--------V-100F------------------------------- 

INT 10 - VIDEO - GET CURRENT VIDEO MODE 

AH = 0Fh 

Return: AH = number of character columns 

AL = display mode (see #00010 at AH=00h) 

BH = active page (see AH=05h) 

Notes: if mode was set with bit 7 set ("no blanking"), the returned mode will 

also have bit 7 set 

EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h 

(monochrome) in all extended-row text modes 

HP 200LX returns AL=07h (monochrome) if mode was set to AL=21h 

and always 80 resp. 40 columns in all text modes regardless of 

current zoom setting (see AH=D0h) 

when using a Hercules Graphics Card, additional checks are necessary: 

mode 05h: if WORD 0040h:0063h is 03B4h, may be in graphics page 1 

(as set by DOSSHELL and other Microsoft software) 


-59-




mode 06h: if WORD 0040h:0063h is 03B4h, may be in graphics page 0 

(as set by DOSSHELL and other Microsoft software) 

mode 07h: if BYTE 0040h:0065h bit 1 is set, Hercules card is in 

graphics mode, with bit 7 indicating the page (mode set by 

Hercules driver for Borland Turbo C) 

the Tandy 2000 BIOS is only documented as returning AL, not AH or BH 

SeeAlso: AH=00h,AH=05h,AX=10F2h,AX=1130h,AX=CD04h,MEM 0040h:004Ah 

--------V-100F56BX4756----------------------- 

INT 10 - VUIMAGE DISPLAY DRIVER (v2.20 and below) 

AX = 0F56h 

BX = 4756h 

CX = 4944h 

DL = function 

01h installation check 

Return: AX = 5649h 

BX = 4443h 

CX = 5647h 

DH = 01h 

02h get first video mode's parameters 

Return: AX = BIOS mode number 

BX = width in pixels 

CX = height in pixels 

DX = number of colors 

03h get next video mode's parameters 

Return: as for DL=02h 

04h display line??? 

ES:DI -> record (see #00016) 

??? 

Return: ??? 

Program: VUIMAGE is a shareware GIF/TIFF image viewer by Offe Enterprises 

Note: the use of TSR display drivers was discontinued after v2.20 

Index: installation check;VUIMAGE display driver 


Format of record for VUIMAGE Function 04h: 


00h WORD row number 

02h WORD starting column??? 

04h WORD ending column??? 

??? 

--------V-100F--SIF123----------------------- 

INT 10 - FRIEZE v7.41+ - INSTALLATION CHECK 

-60-


AH = 0Fh 

SI = F123h 

DI = 321Fh 

Return: AH = number of character columns 

AL = display mode (see #00010 at AH=00h) 

BH = active page (see AH=05h) 

SI = DI = F345h if installed 

Notes: 

if mode was set with bit 7 set ("no blanking"), the returned mode will 

also have bit 7 set 

EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h 

(monochrome) in all extended-row text modes 

SeeAlso: AH=0Fh"VIDEO",AH=4Bh"FRIEZE" 

--------V-1010------------------------------- 

INT 10 - BIOS Window Extension v1.1 - SET WINDOW COORDINATES 

AH = 10h 

CH,CL = row,column of upper left corner of window 

DH,DL = row,column of lower right corner of window 

Return: AL = status 


01h failed 

AH destroyed 

Program: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal 

Note: when a window has been set, all output via AH=0Eh is restricted to 

the specified window 

SeeAlso: AH=11h"Window",AH=12h"Window" 

--------V-1010------------------------------- 

INT 10 - VIDEO - Eagle PC2 BIOS Rev. C - SET SCROLL SPEED 

AH = 10h 

AL = speed 

00h fast 

01h slow (scrolling only moves characters during vertical retrace) 

Return: AH = previous speed 

--------V-1010------------------------------- 

INT 10 - Tandy 2000 - VIDEO - GET/SET CHARACTER FONTS 

AH = 10h 

AL = control value 

bit 0: set character set instead of reading it 

bit 1: high 128 characters instead of low 128 characters 

ES:BX -> new character set if AL bit 0 set 

Return: ES:BX -> current character set if AL bit 0 clear on entry 

Notes: this interrupt is identical to INT 52 on Tandy 2000 




-61-




the character set consists of 16 bytes for each of the 128 characters, 

where each of the 16 bytes describes the pixels in one scan line, 

most significant bit leftmost 

SeeAlso: AH=00h,AH=0Bh/BH=02h,AH=11h"Tandy 2000",AH=12h"Tandy 2000" 

SeeAlso: INT 52"Tandy 2000" 

--------V-101000----------------------------- 

INT 10 - VIDEO - SET SINGLE PALETTE REGISTER (PCjr,Tandy,EGA,MCGA,VGA) 

AX = 1000h 

BL = palette register number (00h-0Fh) 

= attribute register number (undocumented) (see #00017) 

BH = color or attribute register value 


Notes: on MCGA, only BX = 0712h is supported 

under UltraVision, the palette locking status (see AX=CD01h) 

determines the outcome 

SeeAlso: AX=1002h,AX=1007h,AX=CD01h 


(Table 00017) 

Values for attribute register number: 

10h attribute mode control register (should let BIOS control this) 

11h overscan color register (see also AX=1001h) 

12h color plane enable register (bits 3-0 enable corresponding 

text attribute bit) 

13h horizontal PEL panning register 

14h color select register 

--------V-101001----------------------------- 

INT 10 - VIDEO - SET BORDER (OVERSCAN) COLOR (PCjr,Tandy,EGA,VGA) 

AX = 1001h 

BH = border color (00h-3Fh) 


BUG: the original IBM VGA BIOS incorrectly updates the parameter save area 

and places the border color at offset 11h of the palette table 

rather than offset 10h 

Note: under UltraVision, the palette locking status (see AX=CD01h) 



--------V-101002----------------------------- 

INT 10 - VIDEO - SET ALL PALETTE REGISTERS (PCjr,Tandy,EGA,VGA) 

AX = 1002h 

ES:DX -> palette register list (see #00018) 

BH = 00h to avoid problems on some adapters 

-62-





Note: under UltraVision, the palette locking status (see AX=CD01h) 


SeeAlso: AX=1000h,AX=1001h,AX=1009h,AX=CD01h 


Format of palette register list: 


00h 16 BYTEs colors for palette registers 00h through 0Fh 

10h BYTE border color 


--------V-101003----------------------------- 

INT 10 - VIDEO - TOGGLE INTENSITY/BLINKING BIT (Jr, PS, TANDY 1000, EGA, VGA) 

AX = 1003h 

BL = new state 

00h background intensity enabled 

01h blink enabled 

BH = 00h to avoid problems on some adapters 


Notes: although there is no function to get the current status on adapters 

prior to the VGA, bit 5 of 0040h:0065h indicates the state; on the 

VGA, use AH=1Bh and check offset 2Dh of the returned data (see #00040) 

when configured for a monochrome display, the Boca Research Multi-EGA 

with ROM v M1.1 Type D has its screen disrupted if BH is not clear 

this call is reported to be "Get Cursor Position" on the Tandy 

1000SL/TL 

SeeAlso: AH=08h,AH=1Bh 

--------V-101007----------------------------- 

INT 10 - VIDEO - GET INDIVIDUAL PALETTE REGISTER (VGA,UltraVision v2+) 

AX = 1007h 

BL = palette or attribute (undoc) register number (see #00017) 

Return: BH = palette or attribute register value 

Note: UltraVision v2+ supports this function even on color EGA systems in 

video modes 00h-03h, 10h, and 12h; direct programming of the palette 

registers will cause incorrect results because the EGA registers are 

write-only. To guard against older versions or unsupported video 

modes, programs which expect to use this function on EGA systems 

should set BH to FFh on entry. 


--------V-101008----------------------------- 

INT 10 - VIDEO - READ OVERSCAN (BORDER COLOR) REGISTER (VGA,UltraVision v2+) 

AX = 1008h 

-63-




Return: BH = border color (00h-3Fh) 

Note: (see AX=1007h) 


--------V-101009----------------------------- 

INT 10 - VIDEO - READ ALL PALETTE REGISTERS AND OVERSCAN REGISTER (VGA) 

AX = 1009h 

ES:DX -> 17-byte buffer for palette register list (see #00018) 


Note: UltraVision v2+ supports this function even on color EGA systems in 

video modes 00h-03h, 10h, and 12h; direct programming of the palette 

registers will cause incorrect results because the EGA registers are 

write-only. To guard against older versions or unsupported video 

modes, programs which expect to use this function on EGA systems 

should set the ES:DX buffer to FFh before calling. 


--------V-101010----------------------------- 

INT 10 - VIDEO - SET INDIVIDUAL DAC REGISTER (VGA/MCGA) 

AX = 1010h 

BX = register number 

CH = new value for green (0-63) 

CL = new value for blue (0-63) 

DH = new value for red (0-63) 



--------V-101012----------------------------- 

INT 10 - VIDEO - SET BLOCK OF DAC REGISTERS (VGA/MCGA) 

AX = 1012h 

BX = starting color register 

CX = number of registers to set 

ES:DX -> table of 3*CX bytes where each 3 byte group represents one 

byte each of red, green and blue (0-63) 


SeeAlso: AX=1010h,AX=1017h,INT 62/AX=00A5h 

--------V-101013----------------------------- 

INT 10 - VIDEO - SELECT VIDEO DAC COLOR PAGE (VGA) 

AX = 1013h 

BL = subfunction 

00h select paging mode 

BH = 00h select 4 blocks of 64 

BH = 01h select 16 blocks of 16 

01h select page 


-64-




BH = page number (00h to 03h) or (00h to 0Fh) 


Note: this function is not valid in mode 13h 

SeeAlso: AX=101Ah 

--------V-101015----------------------------- 

INT 10 - VIDEO - READ INDIVIDUAL DAC REGISTER (VGA/MCGA) 

AX = 1015h 

BL = palette register number 

Return: DH = red value 

CH = green value 

CL = blue value 

AX destroyed by some BIOSes 

(e.g. Tseng ET4000 BIOS v8.00n always returns AX=00C9h) 


--------V-101017----------------------------- 

INT 10 - VIDEO - READ BLOCK OF DAC REGISTERS (VGA/MCGA) 

AX = 1017h 

BX = starting palette register 

CX = number of palette registers to read 

ES:DX -> buffer (3 * CX bytes in size) (see also AX=1012h) 

Return: buffer filled with CX red, green and blue triples 

SeeAlso: AX=1012h,AX=1015h,INT 62/AX=00A4h 

--------V-101018----------------------------- 

INT 10 U - VIDEO - SET PEL MASK (VGA/MCGA) 

AX = 1018h 

BL = new PEL value 



--------V-101019----------------------------- 

INT 10 U - VIDEO - READ PEL MASK (VGA/MCGA) 

AX = 1019h 

Return: BL = value read 


--------V-10101A----------------------------- 

INT 10 - VIDEO - GET VIDEO DAC COLOR-PAGE STATE (VGA) 

AX = 101Ah 

Return: BL = paging mode 

00h four pages of 64 

01h sixteen pages of 16 

BH = current page 



-65-




--------V-10101B----------------------------- 

INT 10 - VIDEO - PERFORM GRAY-SCALE SUMMING (VGA/MCGA) 

AX = 101Bh 

BX = starting palette register 

CX = number of registers to convert 


Desc: convert the RGB values of one or more palette registers such that the 

resulting values are grays with the same intensities as the original 

colors 

SeeAlso: AH=12h/BL=33h 

--------V-1010E0----------------------------- 

INT 10 - VIDEO - Diamond Speedstar 24 - SET 24-BIT GRAPHICS MODE 

AX = 10E0h 

BL = video mode (see also #00010 at AH=00h) 

2Eh = 640x480 

Return: ??? 

SeeAlso: AH=00h,AX=10F0h 

--------V-1010F0----------------------------- 

INT 10 - VIDEO - Tseng ET-4000 BIOS - SET HiColor GRAPHICS MODE 

AX = 10F0h 

BL = video mode (see also #00010 at AH=00h) 

13h = 320x200x32K 

2Dh = 640x350x32K 

2Eh = 640x480x32K 

2Fh = 640x400x32K 

30h = 800x600x32K 

3Eh = 640x480x16M (Genoa 7900) 

FFh Tseng 24-bit color mode 

BH = mode 

2Dh = 640x480 

2Eh = 640x480x16M 

2Fh = 640x400 

30h = 800x600 

38h = 1024x768??? (Tseng ET4000/W32i) 

Return: AL = 10h if supported 

AH = status 

00h if successful 

other on error 

Desc: switch the display into a graphics mode with 15 or more bits per pixel 

Note: the Tseng HiColor BIOS extensions are supported by: 

Diamond Computer Systems SpeedStar HiColor VGA 


-66-



Everex Systems HC VGA 


Focus Information Systems 2theMax 4000 

Cardinal Technologies VGA732 

Orchid ProDesigner IIs Genoa 7900 

SeeAlso: AH=00h,AX=10E0h,AX=10F1h,AX=10F2h 

Index: video modes;Tseng Hi-Color 

--------V-1010F1----------------------------- 

INT 10 - VIDEO - Tseng ET-4000 BIOS - GET DAC TYPE 

AX = 10F1h 


BL = type of digital/analog converter (see #00019) 

Desc: determine which type of digital-to-analog converter is installed on the 

display board 

SeeAlso: AX=10F0h,AX=10F2h 


(Table 00019) 

Values for type of DAC: 

00h normal VGA DAC 

01h Sierra SC1148x HiColor DAC 

---Diamond SpeedStar 24--- 

02h new Sierra SS24 DAC (24-bit) 

---generic Tseng BIOS v8+ --- 

02h Sierra Mark2 (15-bit) or Mark3 (15/16-bit) DAC 

03h ATT20c490/1/2 (15/16/24-bit) 

04h AcuMos ADAC1 (15/16/24-bit) 

05h unknown 15/16/24-bit DAC 

06h Cirrus Internal 15/16/24-bit (CL-GD54xx series adapters) 

07h Diamond SS2410 (15/24-bit) 



else other HiColor DAC 

--------V-1010F2----------------------------- 

INT 10 u - VIDEO - Tseng ET-4000 BIOS - CHECK IF HiColor MODE/SET HiColor MODE 

AX = 10F2h 

BL = function 

00h get current HiColor mode 

01h set 15-bit HiColor mode 

02h set 16-bit HiColor mode 

Return: AX = 0010h if supported 

BL = video mode type 

00h not in HiColor mode 

-67-




01h 15-bit RGB mode 



Desc: determine whether the display is in a graphics mode with 15 or more 

bits per pixel color resolution 

Note: set (BL=01h/02h) only works if already in a HiColor mode 

SeeAlso: AH=0Fh,AX=10F0h,AX=10F1h 

--------V-1011------------------------------- 

INT 10 - BIOS Window Extension v1.1 - GET WINDOW COORDINATES 

AH = 11h 

Return: CH,CL = row,column of upper left corner 

DH,DL = row,column of lower right corner 

Desc: determine the portion of the display to which output is restricted 



--------V-1011------------------------------- 

INT 10 - Tandy 2000 - VIDEO - WRITE ATTRIBUTE ONLY 

AH = 11h 

BL = new character attribute (text modes) or color (graphics) 

CX = number of times to write attribute 


Note: this interrupt is identical to INT 52 on Tandy 2000 

SeeAlso: AH=0Ah,AH=0Bh/BH=02h,AH=11h"Tandy 2000",AH=12h"Tandy 2000" 

SeeAlso: INT 52"Tandy 2000" 

--------V-101100----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD USER-SPECIFIED PATTERNS (PS,EGA,VGA) 

AX = 1100h 

ES:BP -> user table 

CX = count of patterns to store 

DX = character offset into map 2 block 

BL = block to load in map 2 

BH = number of bytes per character pattern 


Notes: This function will cause a mode set, completely resetting 

the video environment, but without clearing the video buffer 

the current block specifiers may be determined with INT 10/AH=1Bh, 

looking at offsets 2Bh and 2Ch of the returned data (VGA only) 

(see AH=1Bh,#00040) 

SeeAlso: AX=1101h,AX=1102h,AX=1103h,AX=1104h,AX=1110h,AH=1Bh,AX=CD10h 

SeeAlso: MEM 0040h:0084h 

Index: text mode;font|text mode;screen rows 


-68-




--------V-101101----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD ROM MONOCHROME PATTERNS (PS,EGA,VGA) 

AX = 1101h 

BL = block to load 


Notes: (see also AX=1100h) 

This function will cause a mode set, completely resetting 


the "monochrome" patters are 8x14 pixels in size 




--------V-101102----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD ROM 8x8 DBL-DOT PATTERNS (PS,EGA,VGA) 

AX = 1102h 



Notes: (see AX=1100h) 



--------V-101103----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - SET BLOCK SPECIFIER (PS,EGA,VGA) 

AX = 1103h 

BL = block specifier (see #00020) 


Notes: (see also AX=1110h) 

This function allows dual character sets to appear on screen 

simultaneously 

SeeAlso: AX=1100h,AX=1101h,AX=1102h,AX=1104h,AH=1Bh,AX=CD10h 




Bitfields for block specifier: 


---EGA/MCGA--- 

0,1 block selected by characters with attribute bit 3 clear 

2,3 block selected by characters with attribute bit 3 set 

---VGA--- 

0,1,4 block selected by characters with attribute bit 3 clear 

2,3,5 block selected by characters with attribute bit 3 set 

--------V-101104----------------------------- 

-69-




INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD ROM 8x16 CHARACTER SET (VGA) 

AX = 1104h 







--------V-1011------------------------------- 

INT 10 - VIDEO - Realtek RTVGA - TEXT-MODE CHARACTER GENERATOR FUNCTIONS 

AH = 11h 

AL = 07h load user-specified patterns and recalculate mode parms 

parameters are the same as for AX=1110h 

AL = 08h load monochrome patterns (8x14) and recalculate mode parms 


AL = 09h load ROM 8 by 8 double-dot patterns and recalculate mode parms 


AL = 0Bh load ROM 8x16 character set (VGA) and recalculate mode parms 


Note: these functions should only be called under the same conditions as 

AL=1xh (see AX=1110h"EGA") 

SeeAlso: AX=1100h,AX=1110h"CHARGEN",AX=1110h"Realtek",MEM 0040h:0084h 


--------V-10110F----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - SET USER 8x8 GRAPHICS CHARACTERS 

AX = 110Fh 

ES:BP -> user table for INT 1F 


Note: this function is meant to be called immediately after a mode set; 

results are unpredictable at other times 

SeeAlso: AX=1110h"Realtek",AX=1111h"Realtek",AX=1112h"Realtek",AX=1120h 

--------V-101110----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD USER-SPECIFIED PATTERNS (PS,EGA,VGA) 

AX = 1110h 


CX = count of patterns to store 

DX = character offset into map 2 block 

BL = block to load in map 2 

BH = number of bytes per character pattern 


Notes: This function will cause a mode set, completely resetting 


-70-





This function is designed to be called immediately after a mode set, 

it is equivalent to AX=110xh except that: 

Page 0 must be active. 

Bytes/character is recalculated. 

Max character rows is recalculated. 

CRT buffer length is recalculated. 

CRTC registers are reprogrammed as follows: 

R09 = bytes/char-1 ; max scan line (mode 7 only) 

R0A = bytes/char-2 ; cursor start 

R0B = 0 ; cursor end 

R12 = ((rows+1)*(bytes/char))-1 ; vertical display end 

R14 = bytes/char ; underline loc 

(*** BUG: should be 1 less ***) 

the current block specifiers may be determined with INT 10/AH=1Bh, 

looking at offsets 2Bh and 2Ch of the returned data (VGA only) 

(see AH=1Bh,#00040) 

SeeAlso: AX=1100h,AX=1111h,AX=1112h,AX=1114h,AH=1Bh,AX=CD10h,MEM 0040h:0084h 


--------V-101110----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - SET USER GRAPHICS CHARACTERS 

AX = 1110h 


CX = bytes per character 

BL = row specifier 

00h user set 

DL = number of rows 

01h 14 rows 

02h 25 rows 

03h 43 rows 




SeeAlso: AX=110Fh"Realtek",AX=1112h"Realtek",AX=1121h 

--------V-101111----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD ROM MONOCHROME PATTERNS (PS,EGA,VGA) 

AX = 1111h 




the "monochrome" patters are 8x14 pixels in size 


-71-





--------V-101111----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - SET ROM 8x14 GRAPHICS CHARACTERS 

AX = 1111h 

BL = row specifier (see AX=1121h) 




SeeAlso: AX=110Fh"Realtek",AX=1110h"Realtek",AX=1122h 

--------V-101112----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD ROM 8x8 DBL-DOT PATTERNS (PS,EGA,VGA) 

AX = 1112h 





--------V-101112----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - SET ROM 8x8 DOUBLE-DOT CHARACTERS 

AX = 1112h 





SeeAlso: AX=110Fh"Realtek",AX=1110h"Realtek",AX=1111h"Realtek",AX=1123h 

--------V-101114----------------------------- 

INT 10 - VIDEO - TEXT-MODE CHARGEN - LOAD ROM 8x16 CHARACTER SET (VGA) 

AX = 1114h 





--------V-101118----------------------------- 

INT 10 - IBM SurePath BIOS - Officially "Private" Function 

AX = 1118h 

--------V-101120----------------------------- 

INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET USER 8x8 GRAPHICS CHARS (PS,EGA,VGA) 

AX = 1120h 

ES:BP -> user table for INT 1F 





-72-




SeeAlso: AX=1121h,AX=1122h,AX=1123h,AX=1124h,AX=1129h,INT 1F"SYSTEM DATA" 

SeeAlso: INT 43"VIDEO DATA" 

--------V-101121----------------------------- 

INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET USER GRAPHICS CHARACTERS (PS,EGA,VGA) 

AX = 1121h 




00h user set 


01h 14 rows 

02h 25 rows 

03h 43 rows 

Return: AL = new number of rows (Diamond Stealth64 Video) 



SeeAlso: AX=1120h,AX=1122h,AX=1123h,AX=1124h,AX=1129h"Compaq" 

SeeAlso: AX=1129h"Diamond",INT 1F"SYSTEM DATA",INT 43"VIDEO DATA" 

--------V-101122----------------------------- 

INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET ROM 8x14 GRAPHICS CHARS (PS,EGA,VGA) 

AX = 1122h 



Notes: this function is meant to be called immediately after a mode set; 


UltraVision v2+ sets INT 43 to the appropriate font on this call 

SeeAlso: AX=1111h,AX=1120h,AX=1121h,AX=1123h,AX=1124h,AX=1129h 

SeeAlso: INT 1F"SYSTEM DATA",INT 43"VIDEO DATA" 

--------V-101123----------------------------- 

INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET ROM 8x8 DOUBLE-DOT CHARS (PS,EGA,VGA) 

AX = 1123h 






SeeAlso: AX=1112h,AX=1120h,AX=1121h,AX=1122h,AX=1124h,AX=1129h 


--------V-101124----------------------------- 

INT 10 - VIDEO - GRAPH-MODE CHARGEN - LOAD 8x16 GRAPHICS CHARS (VGA,MCGA) 

AX = 1124h 


-73-









SeeAlso: AX=1120h,AX=1121h,AX=1122h,AX=1123h,AX=1129h 


--------V-101129----------------------------- 

INT 10 - VIDEO - GRAPH-MODE CHARGEN - LOAD 8x16 GRAPH CHARS (Compaq Systempro) 

AX = 1129h 






SeeAlso: AX=1120h,AX=1121h,AX=1122h,AX=1123h,AX=1124h,INT 1F"SYSTEM DATA" 

SeeAlso: INT 43"VIDEO DATA" 

--------V-101129----------------------------- 

INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET USER GRAPHICS CHARACTERS (Diamond) 

AX = 1129h 

DI:BP -> user table 



00h user set 


01h 14 rows 

02h 25 rows 

03h 43 rows 

Return: AL = new number of rows 



supported by Diamond Stealth64 Video 

SeeAlso: AX=1120h,AX=1122h,AX=1123h,AX=1124h,INT 1F"SYSTEM",INT 43"VIDEO" 

--------V-101130----------------------------- 

INT 10 - VIDEO - GET FONT INFORMATION (EGA, MCGA, VGA) 

AX = 1130h 

BH = pointer specifier 

00h INT 1Fh pointer 

01h INT 43h pointer 

02h ROM 8x14 character font pointer 

03h ROM 8x8 double dot font pointer 


-74-




04h ROM 8x8 double dot font (high 128 characters) 

05h ROM alpha alternate (9 by 14) pointer (EGA,VGA) 

06h ROM 8x16 font (MCGA, VGA) 

07h ROM alternate 9x16 font (VGA only) (see #00021) 

11h (UltraVision v2+) 8x20 font (VGA) or 8x19 font (autosync EGA) 

12h (UltraVision v2+) 8x10 font (VGA) or 8x11 font (autosync EGA) 

Return: ES:BP = specified pointer 

CX = bytes/character of on-screen font (not the requested font!) 

DL = highest character row on screen 

Note: for UltraVision v2+, the 9xN alternate fonts follow the corresponding 

8xN font at ES:BP+256N 

BUG: the IBM EGA and some other EGA cards return in DL the number of rows on 

screen rather than the highest row number (which is one less). 

SeeAlso: AX=1100h,AX=1103h,AX=1120h,INT 1F"SYSTEM DATA",INT 43"VIDEO DATA" 


Format of alternate font table [array]: 


00h BYTE character to be replaced (00h = end of table) 

01h N BYTEs graphics data for character, one byte per scan line 

--------V-101130BX4D4F----------------------- 

INT 10 - M10_SCR.COM v3.5+ - INSTALLATION CHECK 

AX = 1130h 

BX = 4D4Fh 

Return: CX = 4F4Dh if installed 

ES:BP -> M10_SCR INT 10 handler 

Program: M10_SCR is a shareware extended text mode and font driver by 

I.V. Morozov 

SeeAlso: INT 16/AX=4D4Fh 

--------V-1012------------------------------- 

INT 10 - BIOS Window Extension v1.1 - GET BLANKING ATTRIBUTE 

AH = 12h 

Return: BH = attribute to use on blanked lines when scrolling 



--------V-1012------------------------------- 

INT 10 - Tandy 2000 - VIDEO - SCROLL WINDOW 

AH = 12h 

AL = number of rows or columns to scroll 

BH = buffer flag 

00h data in user buffer 

ES:SI -> buffer containing character/attribute pairs 

-75-




01h no buffer, fill emptied rows/columns with blanks 

BL = direction in which to scroll 

00h up 

01h down 

02h left 

03h right 

CH,CL = row,column of upper left corner of scroll area 

DH,DL = row,column of lower right corner 


Notes: this interrupt is identical to INT 52 on Tandy 2000 

the user buffer, if supplied, must be organized by row; regardless of 

the scroll direction, all character/attribute pairs for the first 

row are first, then the pairs for the second row, etc. 

SeeAlso: AH=00h,AH=0Bh/BH=02h,AH=11h"Tandy 2000",AH=12h"Tandy 2000" 

SeeAlso: INT 52"Tandy" 

--------V-1012--BL10------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS, EGA, VGA, MCGA) - GET EGA INFO 

AH = 12h 

BL = 10h 

Return: BH = video state 

00h color mode in effect (I/O port 3Dxh) 

01h mono mode in effect (I/O port 3Bxh) 

BL = installed memory (00h = 64K, 01h = 128K, 02h = 192K, 03h = 256K) 

CH = feature connector bits (see #00022) 

CL = switch settings (see #00023,#00024) 

AH destroyed (at least by Tseng ET4000 BIOS v8.00n) 

Note: one possible check for the presence of an EGA or later display card 

is to call this function with BH=FFh; if not present, BH will be 

unchanged on return 

another installation check is used by Athena Digital's HGCIBM, which 

sets CX to FFFFh on calling and checks whether it has been changed 

on return 

Index: installation check;EGA 


Bitfields for feature connector bits: 


0 FEAT 1 line, state 2 




4-7 unused (0) 

-76-


Bitfields for switch settings: 


0 switch 1 OFF 




4-7 unused 




(Table 00024) 

Values for switch settings on original EGA/VGA: 

00h primary MDA/HGC, secondary EGA+ 40x25 

01h-03h primary MDA/HGC, secondary EGA+ 80x25 

04h primary CGA 40x25, secondary EGA+ 80x25 mono 

05h primary CGA 80x25, secondary EGA+ 80x25 mono 

06h primary EGA+ 40x25, secondary MDA/HGC (optional) 

07h-09h primary EGA+ 80x25, secondary MDA/HGC (optional) 

0Ah primary EGA+ 80x25 mono,secondary CGA 40x25 (optional) 

0Bh primary EGA+ 80x25 mono,secondary CGA 80x25 (optional) 

--------V-1012--BL11------------------------- 

INT 10 - VIDEO - Trident TVGA 8800/8900/9000 BIOS - GET BIOS INFO 

AH = 12h 

BL = 11h 

Return: AL = 12h if function supported 

BL = ??? (10h) 

ES:BP -> BIOS info structure (see #00025) 

SeeAlso: AH=12h/BL=12h"TRIDENT" 

Format of Trident BIOS Info structure: 


00h BYTE ??? (0000h) 

01h BYTE OEM Code (00h for original Trident) 

02h WORD ID??? (1073h for 8800BR, 1074 for 8800CS) 

04h 8 BYTEs BIOS date ('mm/dd/yy') 

0Ch WORD ??? 

0Eh 8 BYTEs BIOS Version (' C3-128 ', ' C3-129 ') 

--------V-1012--BL12------------------------- 

INT 10 - VIDEO - Trident TVGA 8800/8900/9000 BIOS - GET VIDEO RAM SIZE 

AH = 12h 

BL = 12h 


-77-




AH = number of 256K banks of RAM installed 

(read from CRTC register 1Fh) 

SeeAlso: AH=12h/BL=11h"TRIDENT" 

--------V-1012--BL20------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS,EGA,VGA,MCGA) - ALTERNATE PRTSC 

AH = 12h 

BL = 20h select alternate print screen routine 


Desc: installs a PrtSc routine from the video card's BIOS to replace the 

default PrtSc handler from the ROM BIOS, which usually does not 

understand screen heights other than 25 lines 

Note: some adapters disable print-screen instead of enhancing it 

SeeAlso: INT 05"PRINT SCREEN" 

--------V-1012--BL2E------------------------- 

INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG 

AH = 12h 

BL = 2Eh 


Note: due to an omitted end-of-list marker, these versions of the BIOS will 

crash the system on this function 

--------V-1012--BL30------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA) - SELECT VERTICAL RESOLUTION 

AH = 12h 

BL = 30h 

AL = vertical resolution 

00h 200 scan lines 




Desc: specify the number of scan lines used to display text modes 

Note: the specified resolution will take effect on the next mode set 

SeeAlso: AH=00h 

--------V-1012--BL31------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - PALETTE LOADING 

AH = 12h 

BL = 31h 

AL = new state 

00h enable default palette loading 

01h disable default palette loading 


Desc: specify whether a default palette should be loaded when the display 


-78-




mode is set 


--------V-1012--BL32------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - VIDEO ADDRESSING 

AH = 12h 

BL = 32h 


00h enable video addressing 

01h disable video addressing 


Desc: specify whether the CPU should have access to video memory and the 

display adapters I/O registers 

--------V-1012--BL33------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - GRAY-SCALE SUMMING 

AH = 12h 

BL = 33h 


00h enable gray scale summing 

01h disable gray scale summing 


Desc: specify whether or not colors should be converted to gray scale when 

palette or color registers are loaded 

SeeAlso: AX=101Bh,AX=BF06h,AX=BF08h 

--------V-1012--BL34------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA) - CURSOR EMULATION 

AH = 12h 

BL = 34h 


00h enable alphanumeric cursor emulation 

01h disable alphanumeric cursor emulation 


Desc: specify whether the BIOS should automatically remap cursor start/end 

according to the current character height in text modes 

SeeAlso: AH=01h,AH=03h 

--------V-1012--BL35------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS) - DISPLAY-SWITCH INTERFACE 

AH = 12h 

BL = 35h 


00h initial adapter video off 

01h initial planar video on 


-79-




02h switch active video off 

03h switch inactive video on 

80h *UNDOCUMENTED* set system board video active flag 

ES:DX -> buffer for 128 byte save area (if AL = 00h-03h) 


Desc: switch between two video adapters which may otherwise have address 

conflicts 

SeeAlso: AX=BF00h,AX=BF01h,INT 6D"VGA" 

--------V-1012--BL36------------------------- 

INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS, VGA) - VIDEO REFRESH CONTROL 

AH = 12h 

BL = 36h 


00h enable refresh 

01h disable refresh 


Desc: specify whether the contents of video memory should be displayed on 

the screen; disabling refresh effectively blanks the screen 

Note: when display refresh is disabled, the entire screen displays the color 

specified by the DAC color register 00h; thus to actually blank the 

screen, the application must first ensure that that register has been 

set to black 

BUG: GEM/VIEWMAX ET3000 and ET4000 drivers dated 1988/6/23 do not correctly 

reenable refresh after the screen has been blanked due to inactivity, 

resulting in a total loss of video synchronization 

SeeAlso: AX=BF05h 

--------V-1012--BL37------------------------- 

INT 10 - VIDEO - XGA - MAINFRAME INTERACTIVE SUPPORT 

AH = 12h 

BL = 37h 

AL = text attribute type (00h normal VGA, 01h mainframe type) 


SeeAlso: #00026,AH=08h,#00042 


Bitfields for XGA mainframe type character attributes: 


7 blink double rate (75% ON time) or use color 8 as background 

(see AX=1003h) 

6 reverse video 

5 underlined 

4 left-most and right-most dots of underline area inverted 

-80-




3 foreground intensity/character font select 

2-0 foreground color 

SeeAlso: #00014,#00036 

--------V-1012--BL38------------------------- 


AH = 12h 

BL = 38h 

SeeAlso: AX=1118h,AH=12h/BL=39h 

--------V-1012--BL39------------------------- 


AH = 12h 

BL = 39h 

SeeAlso: AX=1118h,AH=12h/BL=38h,AH=12h/BL=3Ah 

--------V-1012--BL3A------------------------- 


AH = 12h 

BL = 3Ah 

SeeAlso: AX=1118h,AH=12h/BL=39h 

--------V-1012--BL53------------------------- 

INT 10 - Tseng ET-4000 BIOS v8.00 (1991/06/07) - BUG 

AH = 12h 

BL = 53h 

Note: due to an omitted end-of-list marker, this version of the BIOS will 


--------V-1012--BL57------------------------- 

INT 10 - Tseng ET-4000 BIOS v8.00 (1991/06/07) - BUG 

AH = 12h 

BL = 57h 

Note: due to an omitted end-of-list marker, this version of the BIOS will 


--------V-1012--BH55------------------------- 

INT 10 - VIDEO - ALTERNATE FUNC SELECT (ATI,Tatung,Taxan) - ENHANCED FEATURES 

AH = 12h 

BH = 55h 


00h disable enhanced features 

01h enable enhanced features 

02h get status 

Return: AL = status flags (see #00027) 

03h disable register trapping (CGA emulation) 

04h enable register trapping 


-81-




05h program video mode 

ES:BP -> video mode table (see #00028) 

06h get mode table 

AL = video mode 

Return: ES:BP -> table suitable for mode AL 

(and subfunc BL=05h) (see #00028) 

BP = FFFFh on error 

SI = 0000h (ATI Mach32) 

Note: the ATI Mouse driver (MOUSE.COM/MOUSE.SYS) uses subfunction 06h to get 

the mode table for mode 03h, and then looks for a signature string 

beginning within 32 bytes of the offset specified by the word at 

ES:000Ch 

SeeAlso: AH=FFh"Oak" 

Index: installation check;ATI video adapters 


Bitfields for status flags: 


3 set if enhanced features enabled 

7-5 monitor type 

000 PS/2 mono 

001 PS/2 color 

010 multi-sync 

011 Taxan 650 25kHz 

100 RGB 

101 mono 

110 EGA 

111 Compaq internal 

Format of ATI VGA Wonder video mode table: 


00h BYTE number of columns 

01h BYTE maximum row (number of rows - 1) 

02h BYTE scan lines per row 

03h WORD video buffer size in bytes 

05h 4 BYTEs values for Sequencer registers 1-4 

09h BYTE value for Miscellaneous Output register 

0Ah 25 BYTEs values for CRTC registers 00h-18h 

00h horizontal total size (chars) 

01h horizontal displayed (chars) 

02h horizontal sync position (chars) 

03h horizontal sync width (chars) 

-82-




04h vertical total size (char rows) 

05h vertical total adjust (scan lines) 

06h vertical displayed (char rows) 

07h vertical sync position (char rows) 

08h interlace mode 

09h max scan line in row 

0Ah cursor start scan line 

0Bh cursor end scan line 

0Ch screen memory start (high) 

0Dh screen memory start (low) 

0Eh cursor address (high) 

0Fh cursor address (low) 

10h light pen (high) 

11h light pen (low) 

23h 20 BYTEs default palette (values for Attribute Controller regs 00h-13h) 

37h 9 BYTEs values for Graphics Controller registers 00h-08h 

--------V-1012--BL74------------------------- 


AH = 12h 

BL = 74h 



--------V-1012--BL80------------------------- 


AH = 12h 

BL = 80h 



--------V-1012--BL80------------------------- 

INT 10 - Cirrus Logic BIOS - INQUIRE VGA TYPE 

AH = 12h 

BL = 80h 

Return: AX = controller type in bits 13-0 (see #00029) 

bit 14: ??? 

bit 15: ??? 

BL = silicon revision number (bit 7 set if not available) 

BH = ??? 

bit 2 set if using CL-GD 6340 LCD interface 

SeeAlso: AH=12h/BL=81h,AH=12h/BL=82h,AH=12h/BL=85h,AH=12h/BL=9Ah,AH=12h/BL=A1h 


(Table 00029) 

-83-


Values for Cirrus Logic video controller type: 

0000h no extended alternate select support 

0001h reserved 

0002h CL-GD510/520 

0003h CL-GD610/620 

0004h CL-GD5320 

0005h CL-GD6410 

0006h CL-GD5410 

0007h CL-GD6420 

0008h CL-GD6412 

0010h CL-GD5401 

0011h CL-GD5402 

0012h CL-GD5420 

0013h CL-GD5422 

0014h CL-GD5424 

0015h CL-GD5426 

0016h CL-GD5420r1 

0017h CL-GD5402r1 

0018h CL-GD5428 

0019h CL-GD5429 

0020h CL-GD6205/15/25 

0021h CL-GD6215 

0022h CL-GD6225 

0023h CL-GD6235 

0024h CL-GD6245 

0030h CL-GD5432 

0031h CL-GD5434 

0032h CL-GD5430 

0033h CL-GD5434 rev. E and F 

0035h CL-GD5440 

0036h CL-GD5436 

0039h CL-GD5446 

0040h CL-GD6440 

0041h CL-GD7542 (Nordic) 

0042h CL-GD7543 (Viking) 

0043h CL-GD7541 (Nordic Lite) 

0050h CL-GD5452 (Northstar) 

0052h CL-GD5452 (Northstar) ??? 

SeeAlso: #00732,#00743 

--------V-1012--BL81------------------------- 

INT 10 - Cirrus Logic BIOS - GET BIOS VERSION NUMBER 




-84-




AH = 12h 

BL = 81h 

Return: AH = BIOS major version 

AL = BIOS minor version 

SeeAlso: AH=12h/BL=80h,AH=12h/BL=82h 

--------V-1012--BL82------------------------- 

INT 10 - Cirrus Logic BIOS - GET DESIGN REVISION CODE 

AH = 12h 

BL = 82h 

Return: AL = chip revision 

AH = ??? (AFh for v1.01) 

SeeAlso: AH=12h/BL=80h,AH=12h/BL=81h,#00732 at INT 1A/AX=B102h 

--------V-1012--BL84------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - INQUIRE OPTIONS 

AH = 12h 

BL = 84h 

Return: AX = user options word (see #00030) 

SeeAlso: AH=12h/BL=89h,AH=12h/BL=8Ah,AH=12h/BL=8Bh,AH=12h/BL=8Ch,AH=12h/BL=8Fh 

SeeAlso: AH=12h/BL=90h,AH=12h/BL=9Ah 


Bitfields for Cirrus Logic user options word: 


1,0 centering 

00 vertical centered, 01 from bottom, 10 from top, 11 reserved 

3,2 720-dot fix-up options 

00 OR every 8th and 9th pixel 

01 display MGA mode from left 

10 display MGA mode from right 

11 skip every 9th pixel 

4 ??? 

7-5 video mode (001 CGA, 010 MGA, 011 EGA, 100 VGA) 

8 external monitor enabled instead of LCD panel 

9 vertical expand mode enabled 

10 8-bit mode instead of 16-bit mode 

11 normal video rather than reverse video (for LCD) 

12 attribute automap rather than attribute emulation 

13 bold mode disabled (default) 

14 fast bandwidth 

15 ??? 

--------V-1012--BL85------------------------- 

INT 10 - Cirrus Logic BIOS - GET INSTALLED MEMORY 

-85-




AH = 12h 

BL = 85h 

Return: AL = number of 64K banks of video memory 


--------V-1012--BL89------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - EN/DISABLE REVERSE VIDEO MODE 

AH = 12h 

BL = 89h 

AL = new state (00h enabled, 01h disabled) 


SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Ah,AH=12h/BL=8Bh 

--------V-1012--BL8A------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET FRAME COLOR 

AH = 12h 

BL = 8Ah 

AL = new gray-scale color (00h = black to 0Fh = white) 


SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=8Fh 

--------V-1012--BL8B------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - ENABLE/DISABLE BOLD MODE 

AH = 12h 

BL = 8Bh 



SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=8Ch,AH=12h/BL=8Fh 

--------V-1012--BL8C------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET AUTOMAP/EMULATE ATTRIBUTES 

AH = 12h 

BL = 8Ch 


00h enable automap 

01h disable automap and emulate attributes 


SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Bh 

--------V-1012--BL8F------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - ENABLE/DISABLE EXPAND MODE 

AH = 12h 

BL = 8Fh 



Note: when expand mode is enabled, the vertical dimension is enlarged to 


-86-




full screen 

SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=8Bh,AH=12h/BL=90h 

--------V-1012--BL90------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET CENTERING MODE 

AH = 12h 

BL = 90h 

AL = new position 

00h centered 

01h from top 

02h from bottom 

03h from top 


SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Fh 

--------V-1012--BL91------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET 720-DOT FIXUP MODE 

AH = 12h 

BL = 91h 

AL = new mode 

00h display MGA mode from left of screen (default) 

01h display MGA from right 

02h skip every ninth pixel 

03h OR every 8th and 9th pixel 


SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Ah,AH=12h/BL=90h 

--------V-1012--BL92------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SWITCH DISPLAY 

AH = 12h 

BL = 92h 

AL = new display (00h LCD, 01h external monitor) 


Note: the deselected display is disabled 

SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=90h,AH=12h/BL=94h 

--------V-1012--BL93------------------------- 

INT 10 - Cirrus Logic BIOS - FORCE 8-BIT OR 16-BIT OPERATION 

AH = 12h 

BL = 93h 

AL = new I/O width (00h = 16 bits, 01h = 8 bits) 


SeeAlso: AH=12h/BL=9Ah 

--------V-1012--BL94------------------------- 

INT 10 - Cirrus Logic BIOS v3.02 - POWER CONSERVATION 


-87-




AH = 12h 

BL = 94h 

AL = new state (00h wake up monitor, 01h shut down display) 


Note: AL=01h is reported not to work properly on the LCD panel 


--------V-1012--BL9A------------------------- 

INT 10 - Cirrus Logic BIOS - GET USER OPTIONS 

AH = 12h 

BL = 9Ah 

Return: AX = options word 1 (see #00031) 

CX = options word 2 (see #00032) 

BX,DX reserved 

SeeAlso: AH=12h/BL=80h,AH=12h/BL=84h,AH=12h/BL=93h,AH=12h/BL=A0h 

SeeAlso: AH=12h/BL=A3h,AH=12h/BL=A4h,#00732 at INT 1A/AX=B102h 


Bitfields for Cirrus Logic options word 1: 


0,1 reserved 

2-4 monitor type 

5-6 maximum vertical resolution 

7-9 reserved 

10 force 8-bit operation 

11-13 reserved 

14 vertical refresh frequency at 640x480 

=0 60 Hz 

=1 high refresh 

15 reserved 

SeeAlso: AH=12h/BL=AEh 

Bitfields for Cirrus Logic options word 2: 


15-13 vertical refresh frequency at 1024x768 


10-6 reserved 


3-0 reserved 


Bitfields for Cirrus Logic Options word 2 (alternate???): 


-88-





0000 43i Hz 

0001 60 Hz 

0010 70 Hz 

0011 72 Hz 

0100 76 Hz 

other reserved 


0000 56 Hz 

0001 60 Hz 

0010 72 Hz 

0011 75 Hz 


7-4 maximum vertical resolution 

0000 480 scanlines 






000 43i Hz 

001 60 Hz 

010 71.2 Hz (CL-GD5434 rev. E and F) 

011 74 Hz (CL-GD5434 rev. E and F) 


0 reserved 


--------V-1012--BLA0------------------------- 

INT 10 - Cirrus Logic BIOS - GET VIDEO MODE AVAILABILITY 

AH = 12h 

BL = A0h 

AL = video mode number (00h-7Fh) 

Return: AH bit 0: video mode supported 

BX = offset of BIOS subroutine to fixup standard video parameters 

(call subroutine with DS:SI and ES:DI as returned by this call) 

DS:SI -> standard video parameters or FFFFh:FFFFh 

ES:DI -> supplemental video parameters or FFFFh:FFFFh 

SeeAlso: AH=00h,AH=12h/BL=9Ah,AH=12h/BL=A1h 

--------V-1012--BLA1------------------------- 

INT 10 - Cirrus Logic BIOS - READ MONITOR TYPE AND ID FROM 15-PIN CONNECTOR 

AH = 12h 


-89-


BL = A1h 

Return: BH = monitor ID (see #00034) 

BL = monitor type (00h color, 01h grayscale, 02h no display) 

SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A2h 




(Table 00034) 

Values for Cirrus Logic monitor ID: 

00h-08h reserved 

09h IBM 8604/8507 or equivalent 

0Ah IBM 8514 or equivalent 

0Bh IBM 8515 or equivalent 

0Dh IBM 8503 or equivalent 

0Eh IBM 8512/8513 or equivalent 

0Fh no monitor 

--------V-1012--BLA2------------------------- 

INT 10 - Cirrus Logic BIOS - SET MONITOR HORIZONTAL RETRACE FREQUENCY 

AH = 12h 

BL = A2h 

AL = retrace rate 

00h standard VGA (31.5 kHz) 

01h 8514-compatible (31.5 kHz and 35.5 kHz interlaced) 

02h SuperVGA (31.5-35.1 kHz) 

03h extended SuperVGA (31.5-35.5 kHz) 

04h multi-frequency (31.5-37.8 kHz) 

05h extended multi-frequency (31.5-48.0 kHz) 

06h super multi-frequency (31.5-56.0 kHz) 

07h extended super multi-frequency (31.5-64.0 kHz) 


SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A0h,AH=12h/BL=A4h 

--------V-1012--BLA3------------------------- 

INT 10 - Cirrus Logic BIOS - SET VGA REFRESH 

AH = 12h 

BL = A3h 

AL = refresh rate for 640x480 (00h normal, 01h high) 



--------V-1012--BLA4------------------------- 

INT 10 - Cirrus Logic BIOS - SET MONITOR TYPE 

AH = 12h 

BL = A4h 

AL = options 1 

-90-




bits 7-4 = vertical refresh at 640x480 

(0 = 60Hz, 1 = 72Hz, other reserved) 

bits 3-0 = maximum vertical resolution 

(0 = 480 scanlines, 1 = 600, 2 = 768, 3 = 1024, other reserved) 

BH = options 2 


(0=87Hz-int, 1=60Hz, 2=70Hz, 3=72Hz, 4=76Hz, other reserved) 


(0 = 56Hz, 1 = 60Hz, 2 = 72Hz, other reserved) 

CH = options 3 


(0=87Hz-int, 1=60Hz, 2=70Hz, other reserved) 

bits 3-0: reserved 

CL,DX reserved 



--------V-1012--BLAE------------------------- 

INT 10 - Cirrus Logic BIOS - GET HIGH REFRESH 

AH = 12h 

BL = AEh 

Return: AL = result 


bit 0: 640x480 high refresh rate 

=0 72 Hz 

=1 75 Hz 

SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A3h,AH=12h/BL=A4h,AH=12h/BL=AFh 

--------V-1012--BLAF------------------------- 

INT 10 - Cirrus Logic BIOS - SET HIGH REFRESH 

AH = 12h 

BL = AFh 

AL = option 


bit 0: 640x480 high refresh rate 

=0 72 Hz 

=1 75 Hz 


SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A3h,AH=12h/BL=A4h,AH=12h/BL=AEh 

--------V-1012--BLBE------------------------- 


AH = 12h 

BL = BEh 


-91-






--------V-1012--BLC6------------------------- 


AH = 12h 

BL = C6h 



--------V-1012--BLF0------------------------- 


AH = 12h 

BL = F0h 



--------V-1012--BLF1-------------------------- 

INT 10 - Tseng ET-4000 BIOS - GET/SET SCREEN REFRESH RATE 

AH = 12h 

BL = F1h 


00h set refresh rate 

01h get refresh rate 

BH = video mode 

00h 640x480 

01h 800x600 

02h 1024x768 

03h 1280x1024 

CX = new refresh rate (see #00035) if AL = 00h 


CX = current rate (for AL=00h, a changed CX indicates failure) 


(Table 00035) 

Values for Tseng ET4000 refresh rate: 

CX 640x480 800x600 1024x768/1280x1024 

00h 60 Hz 56 Hz interlaced 

01h 72 Hz 60 Hz 60 Hz 

02h 75 Hz 72 Hz 70 Hz 

03h 90 Hz 75 Hz 75 Hz 

04h -- 90 Hz -- 

--------V-1013------------------------------- 

INT 10 - VIDEO - WRITE STRING (AT and later,EGA) 

AH = 13h 

-92-




AL = write mode 

bit 0: update cursor after writing 

bit 1: string contains alternating characters and attributes 

bits 2-7: reserved (0) 


BL = attribute if string contains only characters 

CX = number of characters in string 

DH,DL = row,column at which to start writing 

ES:BP -> string to write 


Notes: recognizes CR, LF, BS, and bell; for the ET4000 BIOS, scrolling, 

backspace, and CR only take place in the active page 

also available PC or XT with EGA or higher 

HP 95LX only supports write mode 00h 

IBM documents AL=10h,11h,20h,21h as "private" rather than "reserved" 

with PhysTechSoft's PTS ROM-DOS the AL,BH,BL,DH, and DL values are 

ignored on entry. 

BUG: on the IBM VGA Adapter, any scrolling which may occur is performed on 

the active page rather than the requested page 

SeeAlso: AH=09h,AH=0Ah,AH=13h"DOS/V" 

--------J-1013------------------------------- 

INT 10 - DOS/V - READ/WRITE DOUBLE-BYTE CHARACTER SET CHARACTERS/ATTRIBUTES 

AH = 13h 

AL = function 

10h read characters and standard attributes 

11h read characters and extended attributes 

12h write characters and standard attributes 

13h write characters and extended attributes 

BH = 00h 

CX = number of characters to transfer 

DH,DL = row,column at which to start transfer 

ES:BP -> buffer for/containing characters and attributes (see #00036) 

Return: ES:BP buffer filled if reading 

Program: DOS/V is a Japanese-language version of MS-DOS which can run on 

standard (non-Japanese) ATs and compatible equipped with a VGA or 

newer video adapter 

Notes: subfunctions 11h and 13h are only valid when DOS/V is using video 

mode 73h 

the cursor position is not changed by these functions 

extended attributes consist of three bytes; the first is the standard 

character attribute byte, the second is as described below, and the 


-93-


third is always zero in current versions 

SeeAlso: AH=00h,AH=13h"VIDEO" 




Bitfields for DOS/V second extended attribute byte: 


7 underline using foreground color 

6 reverse foreground/background specified in standard attribute byte 

5-4 unused 

3 vertical white grid line in cell 

2 horizontal white grid line in cell 

1-0 unused 

SeeAlso: #00014,#00026 

--------V-101400----------------------------- 

INT 10 - VIDEO - LOAD USER-SPECIFIED LCD CHARACTER FONT (CONV,Compaq Port 386) 

AX = 1400h 

ES:DI -> character font 

BH = number of bytes per character 

08h or 10h (Compaq) 

BL = 00h load main font (block 0) 

01h load alternate font (block 1) 

CX = number of characters to store 

DX = character offset into RAM font area 



--------V-101401----------------------------- 

INT 10 - VIDEO - LOAD SYSTEM ROM DEFAULT LCD CHARACTER FONT (CONV,CP386) 

AX = 1401h 

BL = font to load 

00h main font (block 0) 

01h alternate font (block 1) 



--------V-101402----------------------------- 

INT 10 - VIDEO - SET MAPPING OF LCD HIGH INTENSITY ATTRIBUTES (CONV,CP386) 

AX = 1402h 


00h ignore high intensity attribute 

01h map high intensity to reverse video 

02h map high intensity to underscore 

03h map high intensity to selected alternate font 

B0h half intensity (Compaq) 

-94-


B1h toggle active intensity bit interpretation (CP386) 


--------V-1015------------------------------- 

INT 10 - VIDEO - GET PHYSICAL DISPLAY PARAMETERS (CONVERTIBLE) 

AH = 15h 

Return: AX = alternate display adapter type (see #00037) 

ES:DI -> parameter table (see #00038) 

SeeAlso: AH=1Bh 




(Table 00037) 

Values for PC Convertible alternate display adapter type: 

0000h none 

5140h LCD 

5153h CGA 

5151h mono 

Format of PC Convertible display parameter table: 


00h WORD monitor model number 

02h WORD vertical pixels per meter 

04h WORD horizontal pixels per meter 

06h WORD total vertical pixels 

08h WORD total horizontal pixels 

0Ah WORD horizontal pixel separation in micrometers 

(width, center-to-center) 

0Ch WORD vertical pixel separation in micrometers 

(height, center-to-center) 

--------V-1015------------------------------- 

INT 10 - VIDEO - SET SUPERIMPOSE MODE (Sperry PC) 

AH = 15h 

AL = superimpose mode 

00h show graphics screen 

01h show text screen 

02h show text screen superimposed on graphics screen 


--------J-1018------------------------------- 

INT 10 - VIDEO - DOS/V - GET/SET FONT PATTERN 

AH = 18h 


00h get font pattern 

01h set font pattern 

-95-




BX = 0000h 

CL = character size in bytes (01h,02h) 

CH = 00h 

DH = character width in pixels 

DL = character height in pixels 

ES:DI -> buffer for/containing font image 

Return: AL = status (00h successful, else error) 

ES:DI buffer filled for function 00h if successful 

Note: the supported font sizes are 8x16 single-byte, 8x19 single-byte, 

16x16 double-byte, and 24x24 double-byte 

SeeAlso: AH=19h,INT 16/AH=14h 

--------V-1019------------------------------- 

INT 10 - Japanese VIDEO - DOUBLE-BYTE CHARACTER SET SHIFT INFORMATION 

AH = 19h 

??? 

Return: ??? 


--------V-101A00----------------------------- 

INT 10 - VIDEO - GET DISPLAY COMBINATION CODE (PS,VGA/MCGA) 

AX = 1A00h 

Return: AL = 1Ah if function was supported 

BL = active display code (see #00039) 

BH = alternate display code (see #00039) 

Notes: this function is commonly used to check for the presence of a VGA 

this function is supported on the ATI EGA Wonder with certain 

undocumented configuration switch settings, even though the EGA 

Wonder does not support VGA graphics; to distinguish this case, 

call AX=1C00h with CX nonzero, which the EGA Wonder does not support 

SeeAlso: AH=12h/BL=35h,AX=1A01h,AH=1Bh,AH=1Ch,MEM 0040h:008Ah 

Index: installation check;VGA 


(Table 00039) 

Values for display combination code: 

00h no display 

01h monochrome adapter w/ monochrome display 

02h CGA w/ color display 

03h reserved 

04h EGA w/ color display 

05h EGA w/ monochrome display 

06h PGA w/ color display 

07h VGA w/ monochrome analog display 

-96-




08h VGA w/ color analog display 

09h reserved 

0Ah MCGA w/ digital color display 

0Bh MCGA w/ monochrome analog display 

0Ch MCGA w/ color analog display 

FFh unknown display type 

--------V-101A01----------------------------- 

INT 10 - VIDEO - SET DISPLAY COMBINATION CODE (PS,VGA/MCGA) 

AX = 1A01h 

BL = active display code (see #00039) 

BH = alternate display code 

Return: AL = 1Ah if function was supported 

SeeAlso: AH=12h/BL=35h,AX=1A00h 

--------V-101B------------------------------- 

INT 10 - VIDEO - FUNCTIONALITY/STATE INFORMATION (PS,VGA/MCGA) 

AH = 1Bh 

BX = implementation type 

0000h return funtionality/state information 

ES:DI -> 64-byte buffer for state information (see #00040) 

Return: AL = 1Bh if function supported 

ES:DI buffer filled with state information 

BUG: Trident 8900 (BIOS D3.0 1991/11/12) and Trident 9000 (C3.0 1991/10/25) 

do not correctly set the fields at offsets 27h and 29h of the 

state information 

SeeAlso: AH=15h,AX=1A00h,AX=1F01h 


Format of MCGA+ state information: 


00h DWORD address of static funtionality table (see #00045) 

04h BYTE video mode in effect 

05h WORD number of columns 

07h WORD length of regen buffer in bytes 

09h WORD starting address of regen buffer 

0Bh WORD cursor position for page 0 

0Dh WORD cursor position for page 1 

0Fh WORD cursor position for page 2 

11h WORD cursor position for page 3 





-97-


1Bh WORD cursor "type" (start/stop scan lines) 


1Dh BYTE active display page 

1Eh WORD CRTC port address 

20h BYTE current setting of PORT 03x8h 

21h BYTE current setting of PORT 03x9h 

22h BYTE number of rows - 1 

23h WORD bytes/character 

25h BYTE display combination code of active display 

26h BYTE DCC of alternate display 

27h WORD number of colors supported in current mode (0000h = mono) 

29h BYTE number of pages supported in current mode 

2Ah BYTE number of scan lines active 

(0,1,2,3) = (200,350,400,480) 

Tseng ET3000: (4,5,6 = 512,600,768) 

2Bh BYTE primary character block 

2Ch BYTE secondary character block 

2Dh BYTE miscellaneous flags (see #00041) 

2Eh BYTE non-VGA mode support (see #00042) 

2Fh 2 BYTEs reserved (00h) 

31h BYTE video memory available 

00h = 64K, 01h = 128K, 02h = 192K, 03h = 256K 

32h BYTE save pointer state flags (see #00043) 

33h BYTE display information and status (see #00044) 

34h 12 BYTEs reserved (00h) 



Bitfields for miscellaneous flags: 


0 all modes on all displays on 

1 gray summing on 

2 monochrome display attached 

3 default palette loading disabled 

4 cursor emulation enabled 

5 0 = intensity; 1 = blinking 

6 flat-panel display is active 

7 unused (0) 


Bitfields for non-VGA mode support: 


7-5 reserved 

4 132-column mode supported 

-98-


3 =1 MFI attributes enabled (see AH=12h/BL=37h) 

=0 VGA attributes 

2 16-bit VGA graphics present 

1 adapter interface driver required 

0 BIOS supports information return for adapter interface 





Bitfields for save pointer state flags: 


0 512 character set active 

1 dynamic save area present 

2 alpha font override active 

3 graphics font override active 

4 palette override active 

5 DCC override active 



Bitfields for display information and status: 


7 640x480 flat-panel can be used simultaneously with CRT controller 

6-3 reserved 

2 color display 

1 flat-panel display active 

0 flat-panel display attached 


Format of Static Functionality Table: 


00h BYTE modes supported 1 

bit 0 to bit 7 = 1 modes 0,1,2,3,4,5,6,7 supported 


bit 0 to bit 7 = 1 modes 8,9,0Ah,0Bh,0Ch,0Dh,0Eh,0Fh supported 


bit 0 to bit 3 = 1 modes 10h,11h,12h,13h supported 

bit 4 to bit 7 unused (0) 

03h BYTE (IBM) reserved 

(Tseng ET3000/4000) modes supported 4 

bit 0 to bit 7 = modes 18h-1Fh supported 



-99-



bit 0 to bit 7 = modes 20h-27h supported 




bit 0 to bit 7 = modes 28h-2Fh supported 



bit 0 to bit 7 = modes 30h-37h supported 

07h BYTE scan lines supported 

bit 0 to bit 2 = 1 if scan lines 200,350,400 supported 

bits 3-7 = unused (0) 

08h BYTE total number of character blocks available in text modes 

09h BYTE maximum number of active character blocks in text modes 

0Ah WORD miscellaneous function support flags (see #00046) 

0Ch WORD reserved 

0Eh BYTE save pointer function flags (see #00047) 

0Fh BYTE reserved 



Bitfields for miscellaneous function support flags: 


0 all modes on all displays function supported 

1 gray summing function supported 

2 character font loading function supported 

3 default palette loading enable/disable supported 

4 cursor emulation function supported 

5 EGA palette present 

6 color palette present 

7 color-register paging function supported 

8 light pen supported (see AH=04h) 

9 save/restore state function 1Ch supported 

10 intensity/blinking function supported (see AX=1003h) 

11 Display Combination Code supported (see #00039) 

12-15 unused (0) 


Bitfields for save pointer function flags: 


0 512 character set supported 

1 dynamic save area supported 

2 alpha font override supported 

3 graphics font override supported 

-100-


4 palette override supported 

5 DCC extension supported 



--------V-101C------------------------------- 

INT 10 - VIDEO - SAVE/RESTORE VIDEO STATE (PS50+,VGA) 

AH = 1Ch 

AL = function 

00h return state buffer size 

Return: BX = number of 64-byte blocks needed 

01h save video state 

ES:BX -> buffer 

02h restore video state 

ES:BX -> buffer containing previously saved state 

CX = requested states (see #00048) 

Return: AL = 1Ch if function supported 

Notes: 

many BIOSes corrupt the video registers when saving the state, so a 

program should restore the state immediately after saving it (the 

saved data is uncorrupted) 

the BIOS data area consists of the 96 bytes from 0040h:0049h-00A8h 

this function is not supported when DOS/V is running 

this function may be a better VGA installation check than the usual 

INT 10/AX=1A00h, since some late-model EGA cards (such as the ATI 

EGA Wonder) supported that call 

SeeAlso: AX=1A00h,AX=5F90h,AX=5FA0h,MEM 0040h:00A8h 




Bitfields for requested states: 


0 video hardware (see #00049) 

1 BIOS data areas 

2 color registers and DAC state (see #00050) 

3-15 unused (0) 


Format of VGA video hardware state: 


00h BYTE sequencer index register 

01h BYTE CRTC index register 

02h BYTE graphics controller index register 

03h BYTE attribute controller index register 

04h BYTE feature controller register 

-101-


05h 4 BYTEs sequencer registers 

09h BYTE sequencer register 0 

0Ah 25 BYTEs CRTC registers 0-8 

23h 16 BYTEs palette registers 00h-0Fh 

33h 4 BYTEs attribute registers 10h-13h 

37h 9 BYTEs graphics controller registers 0-8 

40h BYTE CRTC base address (low) 

41h BYTE CRTC base address (high) 

42h BYTE plane 0 latch 







Format of VGA DAC state: 


00h BYTE read/write mode DAC 

01h BYTE pixel address 

02h BYTE pixel mask 

03h 768 BYTEs color data (256 triples) 

303h BYTE color select register 

--------J-101D------------------------------- 

INT 10 - VIDEO - DOS/V - SHIFT STATUS LINE CONTROL 

AH = 1Dh 

AL = function 

00h enable shift status line(s) 

BX = number of lines to reserve at bottom of screen (usu. 1) 

01h disable shift status line 

BX = number of lines reserved at bottom of screen (usually 1) 

02h get number of status lines 

Return: BX = number of lines reserved for shift status 


--------V-101D------------------------------- 

INT 10 - SpeedSTAR Plus BIOS v4.23+ - SET SYNC PARAMETERS 

AH = 1Dh 

AL = video mode 

ES = caller's segment 


Note: the caller's segment contains at offset 5Ch (FCB field in PSP) 

or 100h a table with sync parameters (see #00051) (BIOS looks at both 

offsets) 

-102-




Format of SpeedSTAR Plus sync table: 


00h 9 BYTEs ID contains string 'ey5CENTER' 

09h 5 BYTEs sync parameters for 640x480 modes 11h,12h,25h,26h,2Eh 

0Bh 5 BYTEs sync parameters for 800x600 modes 29h,30h,2Ah 

13h 5 BYTEs sync parameters for 1024x768 modes 37h,38h 

--------V-101D------------------------------- 


AH = 1Dh 

Note: these versions of the BIOS jump to a random location on this function 

due to a fencepost error 

--------V-101DAABXFDEC----------------------- 

INT 10 U - Diamond Stealth64 Video - INSTALLATION CHECK 

AX = 1DAAh 

BX = FDECh 

Return: BX = CDEFh if Diamond Stealth64 Video 2001-series video card installed 

AL = number of megabytes of video memory 

AH = card type??? (4Bh for VL-Bus/5Bh for PCI) 

CX = ??? (0000h) 

SI:DI -> signature/copyright string 

--------V-101E00----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - READ INFORMATION 

AX = 1E00h 

Return: AL = 1Eh if function supported 

BL = flat-panel status (see #00052) 

ES:DI -> information table (see #00053) 

Note: IBM classifies this function as optional 

SeeAlso: AX=1E01h,AX=1E02h,AX=1E03h,AX=1E04h,AX=1E05h,AX=1EFEh 


Bitfields for flat-panel status: 


7-3 reserved 

2 color display 

1 flat panel is active 

0 flat panel is attached 


Format of flat-panel information table: 


00h BYTE number of WORDs in the remainder of the table 

01h WORD number of vertical pixels per meter 

-103-



03h WORD number of horizontal pixels per meter 


05h WORD total number of vertical pixels 

07h WORD total number of horizontal pixels 

09h WORD vertical pixel separation in micrometers (center-to-center) 

0Bh WORD horizontal pixel separation in micrometers 

0Dh WORD range of gray levels available, less 1 

0Fh WORD number of red levels available, less 1 (0000h if nonochrome) 

11h WORD number of green levels available, less 1 (0000h if nonochrome) 

13h WORD number of blue levels available, less 1 (0000h if nonochrome) 


--------V-101E01----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - LCD/CRT DISPLAY CONTROL 

AX = 1E01h 

BH = function 

bit 7: =1 set display control, =0 query control 


---if BH bit 7 set--- 

BL = new display combination (see #00054) 


BH = results 

bit 7: query/set (copied from input) 


bit 2: simultaneous display is supported by hardware 

bit 1: LCD/CRT display control supported by hardware 

bit 0: set operation was successful (always clear on get) 

BL = active display combination (see #00054) 

SeeAlso: AX=1E00h,AX=1E02h 


Bitfields for Flat-Panel display combination: 


7-2 reserved (0) 

1-0 combination 

00 reserved 

01 LCD active 

10 CRT active 

11 both LCD and CRT active (simultaneous display) 


--------V-101E02----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - DISPLAY POSITION 

AX = 1E02h 

BH = function 

-104-


bit 7: =1 set display position, =0 query position 



BL = new position setting (see #00055) 


BH = results 



bit 3: positioning to top is supported by hardware 

bit 2: positioning to center is supported by hardware 

bit 1: positioning to bottom is supported by hardware 


BL = active position setting (see #00055) 





Bitfields for Flat-Panel position setting: 



1-0 position 

00 center 

01 top 

10 bottom 

11 reserved 

SeeAlso: #00054,#00056 

--------V-101E03----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - VERTICAL EXPANSION FOR TEXT/GRAPHICS MODES 

AX = 1E03h 

BH = function 

bit 7: =1 set vertical expansion, =0 query expansion 



BL = new vertical expansion setting (see #00056) 


BH = results 



bit 3: vertical expansion of text is supported by hardware 

bit 2: vertical expansion of graphics is supported by hardware 

bit 1: hardware supports independent control of expansion in 

text and graphics modes 


-105-


BL = active vertical expansion setting (see #00056) 

SeeAlso: AX=1E00h,AX=1E02h.AX=1E04h 




Bitfields for Flat-Panel vertical expansion setting: 



1 vertical expansion turned on for text modes 

0 vertical expansion turned on for graphics modes 

SeeAlso: #00054,#00055,#00057 

--------V-101E04----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - NORMAL/REVERSE VIDEO FOR TEXT/GRAPHICS MODES 

AX = 1E04h 

BH = function 

bit 7: =1 set normal/reverse video, =0 query normal/reverse 



BL = new normal/reverse video setting (see #00057) 


BH = results 



bit 3: hardware supports reverse video for text modes 

bit 2: hardware supports reverse video for graphics modes 

bit 1: hardware supports independent control of reverse video 

in text and graphics modes 


BL = active normal/reverse video setting (see #00057) 

SeeAlso: AX=1E00h,AX=1E03h,AX=1E05h 

Bitfields for Flat-Panel normal/reverse video setting: 



1 reverse video for text 

0 reverse video for graphics 

SeeAlso: #00054,#00056,#00058,#00059 

--------V-101E05----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - BRIGHTNESS CONTROL 

AX = 1E05h 

BH = function 

bit 7: =1 set brightness, =0 query brightness 


-106-



BL = new brightness setting (see #00058) 


BH = results 



bit 1: software brightness control is supported 


BL = active brightness setting (see #00058) 

Note: this function operates independently of AX=1E07h 

SeeAlso: AX=1E00h,AX=1E04h,AX=1E06h,AX=1E07h 




Bitfields for Flat-Panel brightness control: 



0 high brightness 

SeeAlso: #00057,#00059 

--------V-101E06----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - CONTRAST CONTROL FOR TEXT/GRAPHICS 

AX = 1E06h 

BH = function 

bit 7: =1 set contrast control, =0 query contrast 



BL = new normal/reverse video setting (see #00059) 


BH = results 



bit 3: software contrast control supported for text 

bit 2: software contrast control supported for graphics 

bit 1: hardware supports independent control of contrast 

in text and graphics modes 


BL = active contrast setting (see #00059) 


SeeAlso: AX=1E00h,AX=1E04h,AX=1E05h,AX=1E07h,AX=1E08h 

Bitfields for Flat-Panel contrast control: 



-107-


1 high contrast for text 

0 high contrast for graphics 

SeeAlso: #00057,#00058 

--------V-101E07----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - BRIGHTNESS SETTING 

AX = 1E07h 

BH = function 

bit 7: =1 set brightness control, =0 query brightness 

bit 6: use standard brightness 


---if BH bits 7,6=10--- 

BL = brightness (00h = minimum, FFh = maximum) 


BH = results 


bit 6: standard/custom (copied from input) 


bit 1: software brightness control is supported 

bit 0: set operation was succesful (always clear on get) 

BL = brightness (00h = minimum, FFh = maximum) 



--------V-101E08----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - CONTRAST SETTING 

AX = 1E08h 

BH = function 

bit 7: =1 set contrast control, =0 query contrast 

bit 6: use standard contrast 


---if BH bits 7,6=10--- 

BL = contrast (00h = minimum, FFh = maximum) 


BH = results 


bit 6: standard/custom (copied from input) 


bit 1: software contrast control is supported 

bit 0: set operation was succesful (always clear on get) 

BL = contrast (00h = minimum, FFh = maximum) 






-108-


--------V-101EFE----------------------------- 

INT 10 - VIDEO - FLAT-PANEL - FUNCTION SUPPORT FLAG 

AX = 1EFEh 

ES:DI -> DWORD buffer for bitmap of supported functions 

(set to all zeros before calling) 

Return: ES:DI buffer updated with mask of supported functions 

Index: installation check;flat-panel display support 


--------V-101F00----------------------------- 

INT 10 - VIDEO - XGA - GET DMQS (Display Mode Query and Set) DATA LENGTH 

AX = 1F00h 

Return: AL = 1Fh if supported 

BX = number of bytes of DMQS data 

Note: not supported on the original IBM XGA, only on XGA-NI (non-interlaced) 

and later models. 

SeeAlso: AX=1F01h 

--------V-101F01----------------------------- 

INT 10 - VIDEO - XGA - READ DMQS DATA 

AX = 1F01h 

ES:DI -> user buffer for return data (call AX=1F00h for size) 

Return: AL = 1Fh if function supported 

user buffer filled with DMQS data (see #00060) 

Note: not supported on the original IBM XGA, only on XGA-NI (non-interlaced) 

and later models. 

SeeAlso: AH=1Bh,AX=1F00h,AX=3000h 




Format of XGA DMQS buffer: 


00h WORD offset (in bytes) to DMQS data for next XGA instance 

02h BYTE slot number 

03h BYTE XGA implementation function level identifier 

04h BYTE XGA implementation resolution level identifier 

05h WORD vendor identifier - identifies card vendor 

07h WORD vendor defined field 

09h WORD XGA adapter I/O register base address 

0Bh WORD XGA coprocessor register base address 

(paragraph--multiply by 10h to get physical address) 

0Dh WORD 1 Megabyte system video memory aperture 

0000h if not allocated 

(Multiply by 100000h to get physical address) 

0Fh WORD 4 Megabyte system video memory aperture 

-109-




0000h if not allocated 

(multiply by 100000h to get physical address) 

11h WORD video memory base address 

(multiply by 100000h to get physical address) 

13h WORD composite ID of the attached display 

15h BYTE amount of video memory available, in multiples of 256K bytes 

16h DWORD alternate XGA coprocessor register base address. 0 = none. 

1Ah var DMQS Data for further XGA Instances (as above) 

Note: "Instances" refers to the capability of having up to 8 XGA 

adapters in one computer. 


--------V-101F02----------------------------- 

INT 10 - VIDEO - XGA - GET SVGA DMQS DATA LENGTH 

AX = 1F02h 


BX = length of SVGA DMQS data in bytes 


--------V-101F03----------------------------- 

INT 10 - VIDEO - XGA - GET SVGA DMQS DATA 

AX = 1F03h 

ES:DI -> buffer for SVGA DMQS data (see #00061) 


ES:DI buffer filled 



Format of SVGA DMQS data: 


00h WORD offset to DMQS data for next SVGA instance or 0000h 

02h BYTE reserved 

03h BYTE SVGA implementation functional level 

04h BYTE SVGA implementation resolution level 

05h WORD vendor ID 

07h WORD vendor-specific 

09h 7 BYTEs reserved 

10h BYTE SVGA linear address window size 

00h 64K 

01h 1M 

02h 2M 

03h 4M 

11h WORD SVGA linear address window location or 0000h if not allocated 

(multiply by 10000h [shift left 16 bits] to get physical addr) 

-110-




13h WORD attached monitor's composite monitor ID 

15h BYTE available video RAM in multiples of 256K 



--------V-103000CX0000----------------------- 

INT 10 - VIDEO - LOCATE 3270PC CONFIGURATION TABLE (INSTALLATION CHECK) 

AX = 3000h 

CX = 0000h 

DX = 0000h 

Return: CX:DX -> 3270PC configuration table (see #00062) 

CX:DX = 0000h:0000h if 3270PC Control Program not active 



Format of 3270 PC configuration table: 


00h BYTE aspect ratio X 

01h BYTE aspect ratio Y 

02h BYTE monitor type (see #00063) 


04h BYTE adapter ID 

00h = 5151/5272 adapter 

04h = 5151/5272 with XGA adapter 

30h = 3295 or 3270PC G/GX adapter 


06h BYTE function flags 1 (see #00064) 

07h BYTE function flags 2 

bit 6: GPI graphics supported 

08h WORD segment address of Control Program Level table (see #00065) 

0Ah 10 BYTEs reserved 

(Table 00063) 

Values for 3270 PC monitor type: 

00h 5151 (mono) or 5272 (color) 

01h 3295 

02h 5151 or 5272 with XGA (???) graphics adapter 

03h 5279 with 3270PC G adapter 

04h 5379 model C01 with 3270PC GX adapter 

05h 5379 model M01 with 3270PC GX adapter 

07h non-3270PC with 3270 Workstation Program 

FFh 3270PC Control Program not loaded 

-111-


Bitfields for 3270 PC function flags 1: 


7 mono text, 1 page 

6 color text, 1 page 

5 color text, 4 pages 

4 CGA color graphics 

3 720x350 two-color graphics 

2 360x350 four-color graphics 

1 720x350 eight-color graphics 




Format of Control Program Level table: 


00h WORD program version 

02xxh = 3270PC Control Program v2.xx 

03xxh = 3270PC Control Program v3.xx 

04xxh = 3270 Workstation Program v1.xx 

02h BYTE Control Program ID (00h) 

03h 27 BYTEs Control Program Descriptor ("IBM 3270 PC CONTROL PROGRAM") 

--------a-103800----------------------------- 

INT 10 - Tinytalk Personal v1.09f+ - GET CONFIGURATION INFO 

AX = 3800h 

Return: ES:DI -> configuration info (see #00066) 

Program: Tinytalk is a shareware screen reader by OMS Development/Eric Bohlman 

Notes: this call is also used as the installation check by verifying that the 

returned ES:DI points at valid configuration info 

Tinytalk v1.09f ignores AL and always returns the configuration info; 

v1.10 adds several subfunctions selected with AL 

SeeAlso: AX=3801h,AX=3803h,AX=3806h,AH=39h,INT 14/AX=F0F1h 

SeeAlso: INT 2F/AX=FB00h"AutoBraille" 

Index: installation check;Tinytalk Personal 

Format of Tinytalk Personal configuration info: 


00h 8 BYTEs signature "TTCONFIG" 

08h WORD size of configuration data, not counting signature, this WORD, 

or the following byte 

0Ah BYTE ??? 

0Bh ??? configuration data 

--------a-103801----------------------------- 

INT 10 - Tinytalk Personal v1.10 - ??? 

AX = 3801h 

-112-




DL = ??? 

Return: ??? 


--------a-103802----------------------------- 


AX = 3802h 

DL = ??? 

Return: ??? 


--------a-103803----------------------------- 

INT 10 - Tinytalk Personal v1.10 - GET ??? 

AX = 3803h 

Return: AL = ??? 


--------a-103804----------------------------- 


AX = 3804h 

Return: AX = ??? 


--------a-103805----------------------------- 


AX = 3805h 

Return: AL = ??? 


--------a-103806----------------------------- 


AX = 3806h 

ES:DX -> ASCIZ ??? 

Return: ??? 


--------a-1039------------------------------- 


AH = 39h 

Program: Tinytalk is a shareware screen reader by OMS Development/Eric Bohlman 

Note: this function was a NOP in TTDEMO.EXE, but may be implemented in other 

variants of Tinytalk 

--------V-1040------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "GMODE" - SET GRAPHICS MODE 

AH = 40h 


Program: Hercules GRAFIX (or GRAPH X, as it is called in some documentation) 


-113-




provides text output in graphics mode and some graphics primitives 

on the Hercules Graphics Card 

Desc: switch the Hercules Graphics Card into graphics mode (720x348) without 

clearing the screen; make Page 0 the default for both writing and 

display, and set LEVEL (see AH=44h) to 01h 

SeeAlso: AH=00h,AH=41h,AH=42h 

Index: video modes;Hercules 

--------V-1041------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "TMODE" - SET TEXT MODE 

AH = 41h 


Desc: switch the Hercules Graphics Card into text mode 


Index: video modes;Hercules 

--------V-1042------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "CLRSCR" - CLEAR CURRENT PAGE 

AH = 42h 



--------V-1043------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "GPAGE" - SELECT DRAWING PAGE 

AH = 43h 

AL = page number (0,1) 


Desc: specify which of the two pages of video memory is to be used for 

output 


--------V-1044------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "LEVEL" - SELECT DRAWING FUNCTION 

AH = 44h 

AL = drawing function 

00h clear pixels 

01h set pixels 

02h invert pixels 


Desc: specify how graphics output will change the display 

SeeAlso: AH=40h,AH=45h,AH=46h,AH=4Bh,AH=4Ch,AH=4Dh 

--------V-1045------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "DISP" - SELECT PAGE TO DISPLAY 

AH = 45h 

AL = page number (0,1) 


-114-





Desc: specify which of the two pages of video memory is visible on screen 


--------V-1046------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "PLOT" - DRAW ONE PIXEL 

AH = 46h 

DI = x (0-719) 

BP = y (0-347) 


Notes: function 44h determines operation and function 43h which page to use 

if the indicated coordinate is invalid, this function does nothing 

SeeAlso: AH=0Ch,AH=47h,AH=49h,AH=4Ch,AH=4Dh 

--------V-1047------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "GETPT" - FIND PIXEL VALUE 

AH = 47h 

DI = x (0-719) 

BP = y (0-347) 

Return: AL = 00h pixel clear 

AL = 01h pixel set 

Note: function 43h specifies which page is used 

SeeAlso: AH=0Dh,AH=46h 

--------V-1048------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "MOVE" - MOVE TO POINT 

AH = 48h 

DI = x (0-719) 

BP = y (0-347) 


Desc: specify the location from which to start the next graphics output 


--------V-1049------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "DLINE" - DRAW TO POINT 

AH = 49h 

DI = x (0-719) 

BP = y (0-347) 


Note: function 48h or 49h specify first point, 44h operation and 43h page to 

use 

SeeAlso: AH=43h,AH=44h,AH=48h,AH=4Ch,AH=4Dh 

--------V-104A------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "BLKFIL" - BLOCK FILL 

AH = 4Ah 


-115-




DI = x coordinate of lower left corner 

BP = y coordinate of lower left corner 

BX = height in pixels 

CX = width in pixels 


Desc: draw a solid rectangle of the specified size at the given location 

SeeAlso: AH=4Eh 

--------V-104B------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "TEXT" - DISPLAY CHARACTER 

AH = 4Bh 


DI = x (0-719) 

BP = y (0-347) 


Notes: unlike the other BIOS character functions character position is 

specified in pixels rather than rows and columns 

the character is writting using the drawing function last specified by 

AH=44h 

SeeAlso: AH=09h,AH=0Ah,AH=44h 

--------P-104B------------------------------- 

INT 10 - FRIEZE - API 

AH = 4Bh 

CL = function 

00h (v6.x-) print window 

AL = mode 

00h character 

01h normal 

02h sideways 

01h load window 

ES:BX -> ASCIZ filename from which to read 

02h save window 

ES:BX -> ASCIZ filename to which to write 

03h set print width 

AL = width in 1/4 inches 

04h set print height 

AL = height in 1/4 inches 

05h reserved 

06h set left margin 

AL = printout margin in 1/4 inches 

07h set window size 

ES:BX -> four-WORD structure with Xmin, Ymin, Xmax, Ymax 


-116-



08h reserved 

09h set patterns 

ES:BX -> 16-BYTE vector of screen->printer color correspondnces 

0Ah get patterns 

ES:BX -> 16-BYTE buffer for color correspondences 

0Bh set mode 

AL = mode 

0Ch (v7.41) ??? 

AL = ??? 

00h ??? (calls original INT 05) 

else ??? 

0Dh (v7.41) ??? 

AL = ??? 

00h ??? (calls original INT 05) 

else ??? 

0Eh (v7.41) ??? 

??? 

0Fh get window 

ES:BX -> four-WORD buffer for Xmin, Ymin, Xmax, Ymax 

10h set print options 

ES:BX -> printer options in same format as FRIEZE cmdline 

11h initialize 

ES:BX -> three-WORD array from CARDS.DAT for HRes, VRes, code 

12h (v7.41) ??? 

??? 

13h (v7.41) ??? 

??? 

14h get version 

Return: AH = major version (00h if FRIEZE version before 7) 

AL = minor version 

15h set parameters 

ES:BX -> parameter table (see #00068) 

16h get parameters 

ES:BX -> buffer for parameter table (see #00068) 

17h get printer resolution 

ES:BX -> 12-WORD table for six horizontal/vertical resol pairs 

18h (v8.0 only) reserved 

50h (v7.41) get ??? 


51h (v7.41) get ??? 

Return: ES = ??? (seen 2348h) 



-117-


AX = ??? (seen 8432h) 

Return: AX = status (see #00067) 

SeeAlso: AH=0Fh/SI=F123h 




(Table 00067) 

Values for FRIEZE function status: 


01h user aborted printout with ESC 

02h reserved 

03h file read error 

04h file write error or printer error 

05h file not found 

06h invalid header (not an image or wrong screen mode) or can't create file 

07h file close error 

08h disk error 

09h (v7.0+) printer error 

0Ah invalid function 

0Bh (v7.0+) can't create file 

0Ch (v7.0+) wrong video mode 

Format of FRIEZE parameter table: 


00h WORD top margin (1/100 inch) 

02h WORD left margin (1/100 inch) 

04h WORD horizontal size (1/100 inch) 

06h WORD vertical size (1/100 inch) 

08h WORD quality/draft mode 

00h draft mode 

01h quality mode 

02h use horizontal/vertical resolution for output resolution 

0Ah WORD printer horizontal resolution (dots per inch) 

0Ch WORD printer vertical resolution (dots per inch) 

0Eh WORD reserved (FFFFh) 

Note: any field which should remain unchanged may be filled with FFFFh 

--------V-104C------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "ARC" - DRAW ARC 

AH = 4Ch 

AL = quadrant (1 = upper right, 2 = upper left, etc) 

DI = x coordinate of center 

BP = y coordinate of center 

BX = radius 

-118-





SeeAlso: AH=49h,AH=4Dh 

--------V-104D------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "CIRC" - DRAW CIRCLE 

AH = 4Dh 

DI = x of center 

BP = y of center 

BX = radius 


SeeAlso: AH=49h,AH=4Ch 

--------V-104E------------------------------- 

INT 10 - VIDEO - Hercules GRAFIX - "FILL" - FILL AREA 

AH = 4Eh 

DI = x coordinate of an interior point 

BP = y coordinate of an interior point 


Desc: fill a convex polygonal area bounded by a contiguous line of the 

opposite color with the border color 

Note: the first fill makes the figure solid, the second erases it 

SeeAlso: AH=4Ah 

--------V-104E00----------------------------- 

INT 10 - VESA XGA BIOS Extensions - GET XGA ENVIRONMENT INFORMATION 

AX = 4E00h 

ES:DI -> 256-byte buffer for XGA information (see #00069) 


AH = status 


else error code 

Desc: determine whether VESA XGA extensions are present and the capabilities 

supported by the display adapter 

SeeAlso: AX=4E01h,AX=4E02h,AX=4F00h 

Index: installation check;VESA XGA 


Format of XGA information buffer: 


00h 4 BYTEs signature ("VESA") 

04h WORD VESA version number 

06h DWORD pointer to ASCIZ OEM string 

0Ah DWORD environment flags (see #00070) 

0Eh WORD number of XGA adapters installed (other VESA XGA functions 

require a handle indicating which adapter to use) 

-119-


10h 240 BYTEs 

reserved 




Bitfields for XGA environment flags: 


0-1 system bus (00 = MCA, 01 = ISA, 10 = EISA) 

2 bus mastering available 

3-31 reserved 

--------V-104E01---------------------------- 

INT 10 - VESA XGA BIOS Extensions - RETURN XGA SUBSYSTEM INFORMATION 

AX = 4E01h 

DX = XGA handle (0 to number of XGAs-1) 

ES:DI -> 256-byte buffer for subsystem information (see #00071) 


AH = status 

00h function successful 



Format of XGA subsystem information: 


00h DWORD pointer to null-terminated board OEM string 

04h DWORD capabilities (see #00072) 

08h DWORD pointer to 8KB XGA ROM (or NULL) 

0Ch DWORD pointer to the XGA memory mapped registers 

10h WORD base address of XGA I/O registers (21x0h) 

12h DWORD pointer to start of physical video memory 

(A000h:0000h or B000h:0000h) 

16h DWORD physical address of 4MB aperture (or NULL if none) 

1Ah DWORD physical address of 1MB aperture (or NULL if none) 

1Eh DWORD physical address of 64KB aperture (or NULL if not enabled) 

22h DWORD physical address of OEM aperture (or NULL if none) 

26h WORD size of OEM aperture in 64KByte units 

28h DWORD pointer to list of video modes 

The list is a series of WORDs terminated by FFFFh 

2Ch WORD number of 64KB blocks on the board 

2Eh DWORD XGA manufacturer ID 

byte 0 POS data index 1 

byte 1 is index 2 

byte 2 is 21xAh index 75h 


-120-




Bitfields for XGA capabilities: 


0-1 board bus architecture: 0=MCA, 1=ISA, 3=EISA 

2-3 reserved 

4-6 DMA Channel assigned for acquiring bus mastership (only for ISA bus) 

7 DMA Channel Status (ISA only). enabled if set 

8-31 reserved 

--------V-104E02----------------------------------- 

INT 10 - VESA XGA BIOS Extensions - RETURN XGA MODE INFORMATION 

AX = 4E02h 

CX = Video mode 

DX = XGA handle 

ES:DI -> 256 byte buffer for mode information (see #00073) 


AH = status 





Format of XGA mode information: 


00h WORD attributes of the mode (see #00074) 

02h WORD bytes per logical scanline 

04h WORD horizontal resolution in pixels 

06h WORD vertical resolution in scanlines 

08h BYTE character Width in pixels 

09h BYTE character Height in pixels 

0Ah BYTE number of planes 

0Bh BYTE bits per pixels 

0Ch BYTE memory model (see #00075) 

0Dh BYTE number of Image Pages 

0Eh BYTE number of Red bits 

0Fh BYTE bit position of Red bit field 

10h BYTE number of Green bits 

11h BYTE bit position of Green bit field 

12h BYTE number of Blue bits 

13h BYTE bit position of Blue bit field 

14h BYTE number of Reserved bits 

15h BYTE bit position of Reserved bit field 


-121-




Bitfields for XGA mode attributes: 


0 set if mode is supported 

1 reserved 

2 output is supported by the BIOS 

3 reserved 

4 if set this is a graphics mode (VGA registers inactive, XGA active), 

if clear this is a text mode (VGA registers active, XGA inactive) 


(Table 00075) 

Values for XGA video memory model: 

00h Text Mode 

01h CGA graphics 

02h Hercules graphics 

03h 4-planar graphics 

04h Packed Pixel 

05h Non-chain 4, 256 color 

06h Direct Color 

07h YUV-24 

--------V-104E03----------------------------------- 

INT 10 - VESA XGA BIOS Extensions - SET XGA VIDEO MODE 

AX = 4E03h 

BX = video mode 

CX = other command flags 

bit 0 If clear the feature connector is set to the default state 


ES:DI -> 256 byte buffer 


AH = status 



SeeAlso: AH=00h,AX=4E04h,AX=4F02h 

--------V-104E04----------------------------------- 

INT 10 - VESA XGA BIOS Extensions - RETURN CURRENT VIDEO MODE 

AX = 4E04h 



AH = status 


BX??? = current mode 


-122-




SeeAlso: AH=0Fh,AX=4E03h,AX=4F03h 

--------V-104E05----------------------------------- 

INT 10 - VESA XGA BIOS Extensions - SET FEATURE CONNECTOR STATE 

AX = 4E05h 

BX = Feature Connector State (see #00076) 



AH = status 





Bitfields for XGA Feature Connector State: 


0 Feature Connector is enabled 

1 Feature Connector is in Output Mode rather than Input Mode 


--------V-104E06----------------------------------- 

INT 10 - VESA XGA BIOS Extensions - RETURN FEATURE CONNECTOR STATE 

AX = 4E06h 



AH = status 



BX = Feature Connector State (see #00076) 


--------V-104F00----------------------------- 

INT 10 - VESA SuperVGA BIOS (VBE) - GET SuperVGA INFORMATION 

AX = 4F00h 

ES:DI -> buffer for SuperVGA information (see #00077) 


AH = status 



01h failed 

---VBE v2.0--- 

02h function not supported by current hardware configuration 

03h function invalid in current video mode 

Desc: determine whether VESA BIOS extensions are present and the capabilities 

supported by the display adapter 

-123-


SeeAlso: AX=4E00h,AX=4F01h,AX=7F00h"SOLLEX",AX=A00Ch 

Index: installation check;VESA SuperVGA 




Format of SuperVGA information: 


00h 4 BYTEs (ret) signature ("VESA") 

(call) VESA 2.0 request signature ("VBE2"), required to receive 

version 2.0 info 

04h WORD VESA version number (one-digit minor version -- 0102h = v1.2) 

06h DWORD pointer to OEM name 

"761295520" for ATI 

0Ah DWORD capabilities flags (see #00078) 

0Eh DWORD pointer to list of supported VESA and OEM video modes 

(list of words terminated with FFFFh) 

12h WORD total amount of video memory in 64K blocks 

---VBE v1.x --- 


---VBE v2.0 --- 

14h WORD OEM software version (BCD, high byte = major, low byte = minor) 

16h DWORD pointer to vendor name 

1Ah DWORD pointer to product name 

1Eh DWORD pointer to product revision string 

22h WORD (if capabilities bit 3 set) VBE/AF version (BCD) 

0100h for v1.0P 

24h DWORD (if capabilities bit 3 set) pointer to list of supported 

accelerated video modes (list of words terminated with FFFFh) 

28h 216 BYTEs reserved for VBE implementation 

100h 256 BYTEs OEM scratchpad (for OEM strings, etc.) 

Notes: the list of supported video modes is stored in the reserved portion of 

the SuperVGA information record by some implementations, and it may 

thus be necessary to either copy the mode list or use a different 

buffer for all subsequent VESA calls 

not all of the video modes in the list of mode numbers may be 

supported, e.g. if they require more memory than currently installed 

or are not supported by the attached monitor. Check any mode you 

intend to use through AX=4F01h first. 

the 1.1 VESA document specifies 242 reserved bytes at the end, so the 

buffer should be 262 bytes to ensure that it is not overrun; for 

v2.0, the buffer should be 512 bytes 

the S3 specific video modes will most likely follow the FFFFh 

terminator at the end of the standard modes. A search must then 

-124-



be made to find them, FFFFh will also terminate this second list 

in some cases, only a "stub" VBE may be present, supporting only 

AX=4F00h; this case may be assumed if the list of supported video 

modes is empty (consisting of a single word of FFFFh) 



Bitfields for VESA capabilities: 


0 DAC can be switched into 8-bit mode 

1 non-VGA controller 

2 programmed DAC with blank bit (i.e. only during blanking interval) 

3 (VBE v3.0) controller supports hardware stereoscopic signalling 

3 controller supports VBE/AF v1.0P extensions 

4 (VBE v3.0) if bit 3 set: 

=0 stereo signalling via external VESA stereo connector 

=1 stereo signalling via VESA EVC connector 

4 (VBE/AF v1.0P) must call EnableDirectAccess to access framebuffer 

5 (VBE/AF v1.0P) controller supports hardware mouse cursor 

6 (VBE/AF v1.0P) controller supports hardware clipping 

7 (VBE/AF v1.0P) controller supports transparent BitBLT 


SeeAlso: #00077,AX=4F09h 

--------V-104F01----------------------------- 

INT 10 - VESA SuperVGA BIOS - GET SuperVGA MODE INFORMATION 

AX = 4F01h 

CX = SuperVGA video mode (see #04082 for bitfields) 

ES:DI -> 256-byte buffer for mode information (see #00079) 


AH = status 



01h failed 

Desc: determine the attributes of the specified video mode 


Bitfields for VESA/VBE video mode number: 


15 preserve display memory on mode change 

14 (VBE v2.0+) use linear (flat) frame buffer 

13 (VBE/AF 1.0P) VBE/AF initializes accelerator hardware 

12 reserved for VBE/AF 

11 (VBE v3.0) user user-specified CRTC refresh rate values 

-125-



10-9 reserved for future expansion 

8-0 video mode number (0xxh are non-VESA modes, 1xxh are VESA-defined) 



Format of VESA SuperVGA mode information: 


00h WORD mode attributes (see #00080) 

02h BYTE window attributes, window A (see #00081) 

03h BYTE window attributes, window B (see #00081) 

04h WORD window granularity in KB 

06h WORD window size in KB 

08h WORD start segment of window A (0000h if not supported) 

0Ah WORD start segment of window B (0000h if not supported) 

0Ch DWORD -> FAR window positioning function (equivalent to AX=4F05h) 

10h WORD bytes per scan line 

---remainder is optional for VESA modes in v1.0/1.1, needed for OEM modes--- 

12h WORD width in pixels (graphics) or characters (text) 

14h WORD height in pixels (graphics) or characters (text) 

16h BYTE width of character cell in pixels 

17h BYTE height of character cell in pixels 

18h BYTE number of memory planes 

19h BYTE number of bits per pixel 

1Ah BYTE number of banks 

1Bh BYTE memory model type (see #00082) 

1Ch BYTE size of bank in KB 

1Dh BYTE number of image pages (less one) that will fit in video RAM 

1Eh BYTE reserved (00h for VBE 1.0-2.0, 01h for VBE 3.0) 

---VBE v1.2+ --- 

1Fh BYTE red mask size 

20h BYTE red field position 

21h BYTE green mask size 

22h BYTE green field size 

23h BYTE blue mask size 

24h BYTE blue field size 

25h BYTE reserved mask size 

26h BYTE reserved mask position 

27h BYTE direct color mode info 

bit 0: color ramp is programmable 

bit 1: bytes in reserved field may be used by application 

---VBE v2.0+ --- 

28h DWORD physical address of linear video buffer 

2Ch DWORD pointer to start of offscreen memory 

-126-



30h WORD KB of offscreen memory 


---VBE v3.0 --- 

32h WORD bytes per scan line in linear modes 

34h BYTE number of images (less one) for banked video modes 

35h BYTE number of images (less one) for linear video modes 

36h BYTE linear modes: size of direct color red mask (in bits) 

37h BYTE linear modes: bit position of red mask LSB (e.g. shift count) 

38h BYTE linear modes: size of direct color green mask (in bits) 

39h BYTE linear modes: bit position of green mask LSB (e.g. shift count) 

3Ah BYTE linear modes: size of direct color blue mask (in bits) 

3Bh BYTE linear modes: bit position of blue mask LSB (e.g. shift count) 

3Ch BYTE linear modes: size of direct color reserved mask (in bits) 

3Dh BYTE linear modes: bit position of reserved mask LSB 

3Eh DWORD maximum pixel clock for graphics video mode, in Hz 

42h 190 BYTEs reserved (0) 

Note: while VBE 1.1 and higher will zero out all unused bytes of the buffer, 

v1.0 did not, so applications that want to be backward compatible 

should clear the buffer before calling 


Bitfields for VESA SuperVGA mode attributes: 


0 mode supported by present hardware configuration 

1 optional information available (must be =1 for VBE v1.2+) 

2 BIOS output supported 

3 set if color, clear if monochrome 

4 set if graphics mode, clear if text mode 

---VBE v2.0+ --- 

5 mode is not VGA-compatible 

6 bank-switched mode not supported 

7 linear framebuffer mode supported 

8 double-scan mode available (e.g. 320x200 and 320x240) 

---VBE v3.0 --- 

9 interlaced mode available 

10 hardware supports triple buffering 

11 hardware supports stereoscopic display 

12 dual display start address support 


---VBE/AF v1.0P--- 

9 application must call EnableDirectAccess before calling bank-switching 

functions 


-127-


Bitfields for VESA SuperVGA window attributes: 


0 exists 

1 readable 

2 writable 

3-7 reserved 





(Table 00082) 

Values for VESA SuperVGA memory model type: 

00h text 

01h CGA graphics 

02h HGC graphics 

03h 16-color (EGA) graphics 

04h packed pixel graphics 

05h "sequ 256" (non-chain 4) graphics 

06h direct color (HiColor, 24-bit color) 

07h YUV (luminance-chrominance, also called YIQ) 

08h-0Fh reserved for VESA 

10h-FFh OEM memory models 


--------V-104F02----------------------------- 

INT 10 - VESA SuperVGA BIOS - SET SuperVGA VIDEO MODE 

AX = 4F02h 

BX = new video mode (see #04082,#00083,#00084) 

ES:DI -> (VBE 3.0+) CRTC information block, bit mode bit 11 set 

(see #04083) 


AH = status 


01h failed 

Notes: bit 13 may only be set if the video mode is present in the list of 

accelerated video modes returned by AX=4F00h 

if the DAC supports both 8 bits per primary color and 6 bits, it will 

be reset to 6 bits after a mode set; use AX=4F08h to restore 8 bits 

SeeAlso: AX=4E03h,AX=4F00h,AX=4F01h,AX=4F03h,AX=4F08h 

(Table 00083) 

Values for VESA video mode: 

00h-FFh OEM video modes (see #00010 at AH=00h) 

-128-


100h 640x400x256 

101h 640x480x256 

102h 800x600x16 

103h 800x600x256 

104h 1024x768x16 

105h 1024x768x256 

106h 1280x1024x16 

107h 1280x1024x256 

108h 80x60 text 

109h 132x25 text 

10Ah 132x43 text 

10Bh 132x50 text 

10Ch 132x60 text 

---VBE v1.2+ --- 

10Dh 320x200x32K 

10Eh 320x200x64K 

10Fh 320x200x16M 

110h 640x480x32K 

111h 640x480x64K 

112h 640x480x16M 

113h 800x600x32K 

114h 800x600x64K 

115h 800x600x16M 

116h 1024x768x32K 

117h 1024x768x64K 

118h 1024x768x16M 

119h 1280x1024x32K (1:5:5:5) 

11Ah 1280x1024x64K (5:6:5) 

11Bh 1280x1024x16M 

---VBE 2.0+ --- 

120h 1600x1200x256 

121h 1600x1200x32K 

122h 1600x1200x64K 

81FFh special full-memory access mode 

Notes: 

the special mode 81FFh preserves the contents of the video memory and 

gives access to all of the memory; VESA recommends that the special 

mode be a packed-pixel mode. For VBE 2.0+, it is required that the 

VBE implement the mode, but not place it in the list of available 

modes (mode information for this mode can be queried directly, 

however). 

as of VBE 2.0, VESA will no longer define video mode numbers 




-129-


SeeAlso: #00010,#00011,#00084,#00191 

Index: video modes;VESA 




(Table 00084) 

Values for S3 OEM video mode: 

201h 640x480x256 

202h 800x600x16 

203h 800x600x256 

204h 1024x768x16 

205h 1024x768x256 

206h 1280x960x16 

207h 1152x864x256 (Diamond Stealth 64) 

208h 1280x1024x16 

209h 1152x864x32K 

20Ah 1152x864x64K (Diamond Stealth 64) 

20Bh 1152x864x4G 

211h 640x480x64K (Diamond Stealth 24) 

211h 640x400x4G (Diamond Stealth64 Video / Stealth64 Graphics) 

212h 640x480x16M (Diamond Stealth 24) 

301h 640x480x32K 

Note: these modes are only available on video cards using S3's VESA driver 

SeeAlso: #00083,#00191,#00732 at INT 1A/AX=B102h 

Index: video modes;S3 

Format of VESA VBE CRTC Information Block: 


00h WORD total number of pixels horizontally 

02h WORD horizontal sync start (in pixels) 

04h WORD horizontal sync end (in pixels) 

06h WORD total number of scan lines 

08h WORD vertical sync start (in scan lines) 

0Ah WORD vertical sync end (in scan lines) 

0Ch BYTE flags (see #04084) 

0Dh DWORD pixel clock, in Hz 

11h WORD refresh rate, in 0.01 Hz units 

this field MUST be set to pixel_clock / (HTotal * VTotal), 

even though it may not actually be used by the VBE 

implementation 


Bitfields for VESA VBE CRTC Information Block flags: 

-130-





0 enable double scanning 

1 enable interlacing 

2 horizontal sync polarity (0 positive, 1 negative) 

3 vertical sync polarity (0 positive, 1 negative) 


--------V-104F03----------------------------- 

INT 10 - VESA SuperVGA BIOS - GET CURRENT VIDEO MODE 

AX = 4F03h 


AH = status 


BX = video mode (see #00083,#00084) 

bit 13: VBE/AF v1.0P accelerated video mode 

bit 14: linear frame buffer enabled (VBE v2.0+) 

bit 15: don't clear video memory 

01h failed 

SeeAlso: AH=0Fh,AX=4E04h,AX=4F02h 

--------V-104F04----------------------------- 

INT 10 - VESA SuperVGA BIOS - SAVE/RESTORE SuperVGA VIDEO STATE 

AX = 4F04h 

DL = subfunction 

00h get state buffer size 

Return: BX = number of 64-byte blocks needed 

01h save video states 


02h restore video states 


CX = states to save/restore (see #00085) 


AH = status 


01h failed 

SeeAlso: AH=1Ch,AX=5F90h,AX=5FA0h 


Bitfields for VESA SuperVGA states to save/restore: 


0 video hardware state 

1 video BIOS data state 

2 video DAC state 

3 SuperVGA register state 

-131-




SeeAlso: #00048,#00186 

--------V-104F05----------------------------- 

INT 10 - VESA SuperVGA BIOS - CPU VIDEO MEMORY CONTROL 

AX = 4F05h 

BH = subfunction 

00h select video memory window 

DX = window address in video memory (in granularity units) 

01h get video memory window 

Return: DX = window address in video memory (in gran. units) 

BL = window number 

00h window A 

01h window B 

ES = selector for memory-mapped registers (VBE 2.0+, when called from 

32-bit protected mode) 


AH = status 


01h failed 

Note: when using an accelerated video mode under VBE/AF v1.0P, the 

application must call EnableDirectAccess before switching banks if 

bit 9 of the video mode attributes flag is set (see #00080) 

BUG: Phoenix S3 Trio64V+ v1.02-02 reportedly returns garbage in DX for 

subfunction 01h 

SeeAlso: AX=4F01h,AX=4F06h,AX=4F07h,AX=7000h/BX=0004h 

--------V-104F06----------------------------- 

INT 10 - VESA SuperVGA BIOS v1.1+ - GET/SET LOGICAL SCAN LINE LENGTH (PIXELS) 

AX = 4F06h 


00h set scan line length 

CX = desired width in pixels 

01h get scan line length 


AH = status 


01h failed 

BX = bytes per scan line 

CX = number of pixels per scan line 

DX = maximum number of scan lines 

Notes: if the desired width is not achievable, the next larger width will be 

set 

the scan line may be wider than the visible area of the screen 


-132-




this function is valid in text modes, provided that pixel values are 

multiplied by the character cell width/height 

SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h/BL=02h,AX=4F06h/BL=03h,AX=4F07h 

--------V-104F06BL02------------------------- 

INT 10 - VESA SuperVGA BIOS v2.0+ - SET LOGICAL SCAN LINE LENGTH (BYTES) 

AX = 4F06h 

BL = 02h 

CX = desired scanline width in bytes 


AH = status 


01h failed 

BX = bytes per scan line 

CX = number of pixels per scan line 

DX = maximum number of scan lines 

Notes: if the desired width is not achievable, the next larger width will be 

set 

the scan line may be wider than the visible area of the screen 

this function is valid in text modes, provided that pixel values are 


SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h,AX=4F06h/BL=03h,AX=4F07h 

--------V-104F06BL03------------------------- 

INT 10 - VESA SuperVGA BIOS v2.0+ - GET MAXIMUM SCAN LINE LENGTH 

AX = 4F06h 

BL = 03h 


AH = status 


01h failed 

BX = maximum bytes per scan line 

CX = maximum number of pixels per scan line 

Notes: this function is valid in text modes, provided that pixel values are 


SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h,AX=4F06h/BL=02h,AX=4F07h 

--------V-104F07----------------------------- 

INT 10 - VESA SuperVGA BIOS v1.1+ - GET/SET DISPLAY START 

AX = 4F07h 


00h,80h set display start 

CX = leftmost displayed pixel in scan line 

DX = first displayed scan line 


-133-


01h get display start 

Return: BH = 00h 

CX = leftmost displayed pixel in scan line 

DX = first displayed scan line 

BH = 00h (reserved) 


AH = status 


01h failed 

Notes: 

this function is valid in text modes, provided that values are 


subfunction 80h waits until vertical retrace before changing the 

display start address (VBE v2.0+) 

SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h 

--------V-104F07----------------------------- 

INT 10 - VESA SuperVGA BIOS v3.0+ - SCHEDULED DISPLAY START 

AX = 4F07h 


02h,82h (VBE v3.0) schedule display start at next vertical retrace 

ECX = display start address in bytes 

03h,83h schedule stereoscopic display start 

ECX = left image start address (in bytes) 

EDX = right image start address (in bytes) 

04h get scheduled display start status 

Return: CX = start status 

(00h no display flip, else display has flipped) 


AH = status 


01h failed 

SeeAlso: AX=4F07h"DISPLAY START",AX=4F07h"STEREOSCOPIC" 

--------V-104F07----------------------------- 

INT 10 - VESA SuperVGA BIOS v3.0+ - ENABLE/DISABLE STEREOSCOPIC MODE 

AX = 4F07h 


05h enable stereoscopic mode 

06h disable stereoscopic mode 


AH = status 


01h failed 




-134-




Note: when stereoscopic mode is enabled, the display start address will 

automatically alternate between the left and right images on every 

vertical retrace 

SeeAlso: AX=4F07h"DISPLAY START",AX=4F07h"SCHEDULED" 

--------V-104F08----------------------------- 

INT 10 - VESA SuperVGA BIOS v1.2+ - GET/SET DAC PALETTE CONTROL 

AX = 4F08h 


00h set DAC palette width 

BH = desired number of bits per primary color 

01h get DAC palette width 


AH = status 


BH = current number of bits per primary (06h = standard VGA) 

01h failed 

--------V-104F09----------------------------- 

INT 10 - VESA SuperVGA BIOS v2.0+ - GET/SET PALETTE ENTRIES 

AX = 4F09h 


00h set (primary) palette 

01h get (primary) palette 

02h set secondary palette data 

03h get secondary palette data 

80h set palette during vertical retrace 

CX = number of entries to change 

DX = starting palette index 

ES:DI -> palette buffer, array of DAC entries (see #00086) 


AH = status 


01h failed 

SeeAlso: AX=4F0Ah,AX=D000h"S3VBE" 


Format of VESA VBE palette entry: 


00h BYTE red 

01h BYTE green 

02h BYTE blue 

03h BYTE alpha or alignment byte 

--------V-104F0ABL00------------------------- 

-135-




INT 10 - VESA SuperVGA BIOS v2.0+ - GET PROTECTED-MODE INTERFACE 

AX = 4F0Ah 

BL = 00h 


AH = status 


ES:DI -> protected-mode table (see #00087) 

CX = length of table in bytes, included protected-mode code 

01h failed 

SeeAlso: AX=4F00h,AX=4F05h,AX=4F07h,AX=4F09h 


Format of VESA VBE 2.0 protected-mode table: 


00h WORD offset (within table) of protected-mode code for Function 5 

(Set Window) 

02h WORD offset of protected-mode code for Function 7 (Set Disp Start) 

04h WORD offset of protected-mode code for Function 9 (Set Primary 

Palette) 

06h WORD offset (within table) of list of I/O ports and memory locations 

for which I/O privilege may be required in protected mode 

(0000h if no list) (see #04085) 

08h var code and optional port/memory list 

Format of VESA VBE 2.0+ protected-mode port/memory list: 


00h WORD I/O port number 

... 

WORD FFFFh marking end of I/O port list 

DWORD memory region base address 

WORD memory region limit (one less than length) 

WORD FFFFh marking end of memory region list 

Note: the memory region is optional; if not present, there will be a word 

of FFFFh immediately following the FFFFh marking the end of the I/O 

port list 


--------V-104F0A----------------------------- 

INT 10 O - VESA SuperVGA BIOS v2.0 beta - GET PROTECTED-MODE CODE 

AX = 4F0Ah 

BX = function to be copied (see #00088) 


AH = status 

-136-



CX = number of bytes to copy 

ES:DI -> code for requested function 

01h failed 

SeeAlso: AX=4F09h,AX=D000h"S3VBE" 




(Table 00088) 

Values for VESA VBE protected-mode function identifiers: 

0001h set bank (see AX=4F05h) 

0002h set display start (see AX=4F07h) 

0003h set palette (see AX=4F09h) 

--------V-104F0BBL00------------------------- 

INT 10 - VESA SuperVGA BIOS v3.0 - GET NEAREST PIXEL CLOCK 

AX = 4F0Bh 

BL = 00h get closest pixel clock 

ECX = requested clock frequency in Hz 

DX = video mode number 


AH = status 


ECX = nearest clock rate 

01h failed 

--------V-104F0B----------------------------- 

INT 10 - VESA SuperVGA BIOS - GET VBE/AF v1.0P DEVICE CONTEXT BUFFER 

AX = 4F0Bh 


00h get length of device context buffer 

01h initialize device context buffer 

ES:DI -> real-mode address of buffer (see #00089) 


AH = status 


CX = number of bytes required for buffer (if BL=00h on entry) 

ES:DI buffer initialized (if BL=01h on entry) 

01h failed 

Note: this interface description is derived from the draft VBE/AF proposal 

(version 1.0P, document revsion 0.12P, dated 13jan95) 


Format of VBE/AF v1.0P Device Context buffer: 


-137-


00h WORD 


maximum X coordinate in frame buffer (0 = left edge) 

Note: application must never pass X coordinate greater than 

this value to the SetClipRect function (values are 

NOT range-checked!) 

02h WORD maximum Y coordinate in frame buffer (0 = top edge) 

Note: application must never pass Y coordinate greater than 

this value to the SetClipRect function 

04h DWORD -> "SetForeColor" to set foreground color/mix (see #00091) 

08h DWORD -> "SetBackColor" to set background color/mix (see #00092) 

0Ch DWORD -> "SetClipRect" set hardware clipping rectangle (see #00093) 

10h DWORD -> function "DrawScan" to draw a single scan line 

14h DWORD -> function "DrawScanList" to draw a list of scan lines 

18h DWORD -> function "DrawRect" to draw a solid rectangle 

1Ch DWORD -> function "DrawLine" to draw a solid line 

20h DWORD -> function "DrawPattScan" to draw a patterned scan line 

24h DWORD -> function "BitBlt" to perform screen-to-screen BitBLT 

28h DWORD -> "TransBitBlt" to perform transparent screen-to-screen BitBLT 

2Ch DWORD -> "MonoBitBlt" to monochrome expansion screen-to-screen BitBLT 

30h DWORD -> function "SetCursor" to download hardware cursor image 

34h DWORD -> function "SetCursorPos" to set hardware cursor position 

38h DWORD -> function "SetCursorColor" to set hardware cursor color 

3Ch DWORD -> function "ShowCursor" to show/hide hardware cursor 

40h DWORD -> function "WaitTillIdle" to wait until graphics engine idle 

44h DWORD -> "EnableDirectAccess" to enable direct framebuffer access 

48h DWORD -> "DisableDirectAccess" to disable direct framebuffer access 

4Ch DWORD -> "BankSwitchCB" bank-switching callback function 

(set by application, may simply point at 32-bit VBE 2.0 bank 

switching entry point) 

50h WORD "VidMemSel" selector for video memory (must be set by app) 

52h WORD "IOPortsOff" offset of I/O ports table in context buffer 

54h WORD "IOMemoryOff" offset of I/O memory table in context buffer 

56h WORD "IOMemSel1" selector for first I/O memory area specified by 

I/O memory table (must be set by application) 

58h WORD "IOMemSel2" selector for second I/O memory area 

5Ah WORD "IOMemSel3" selector for third I/O memory area 

5Ch WORD "IOMemSel4" selector for fourth I/O memory area 

5Eh N BYTEs device-specific state buffer 

N WORDs I/O port access table (list of ports, last entry is FFFFh) 

N DWORDs I/O memory access table (list of physical-address/length pairs, 

last entry is FFFFFFFFh) 

N BYTEs 32-bit code for VBE/AF v1.0P function 



-138-




Notes: all function pointers are offsets into the 32-bit code within the 

context buffer, and should be updated to point at the actual 

functions after the application has copied the buffer from the 

real-mode memory used for the interrupt call into its own flat-model 

memory space 

any functions which are not supported by the hardware have function 

pointers which are set to 00000000h initially 


(Table 00090) 

Values for VBE/AF v1.0P color mixing mode: 

00h replace 

01h XOR with existing pixel 

02h OR with existing pixel 

03h AND with existing pixel 

SeeAlso: #00091,#00090 

(Table 00091) 

Call VBE/AF v1.0P function "SetForeColor" with: 

ES:EDI -> device context buffer (see #00089) 

EAX = new foreground color (format varies by video mode) 

BL = new foreground mixing mode (see #00090) 

SeeAlso: #00089,#00092,#00107 

(Table 00092) 

Call VBE/AF v1.0P function "SetbackColor" with: 


EAX = new background color (format varies by video mode) 

BL = new background mixing mode (see #00090) 

SeeAlso: #00089,#00091,#00093 

(Table 00093) 

Call VBE/AF v1.0P function "SetClipRect" with: 


EAX = left clipping coordinate 

EBX = top clipping coordinate 

ECX = right clipping coordinate 

EDX = bottom clipping coordinate 

SeeAlso: #00089,#00092,#00094,#00107 

(Table 00094) 

Call VBE/AF v1.0P function "DrawScan" with: 

-139-





EAX = X1 coordinate 

EBX = Y coordinate 

ECX = X2 coordinate 

Desc: draw a solid horizontal line from (X1,Y) to (X2,Y) in the currentlyactive 

foreground color and mix, omitting the pixel at the largest 

X coordinate 

SeeAlso: #00089,#00093,#00095,#00098,#00107 


(Table 00095) 

Call VBE/AF v1.0P function "DrawScanList" with: 


EAX = Y coordinate of first line 

EBX = length of scan list 

DS:ESI -> scanline list X coordinates (2N WORDs) 

Desc: draw multiple solid horizontal lines at successive Y coordinates, 

using the currently-active foreground color and mix, omitting the 

pixel at the largest X coordinate for each line 

Note: the scanline list consists of pairs of X coordinates; because the 

last pixel is omitted, a scanline will be skipped if X1==X2 

SeeAlso: #00089,#00094,#00096,#00107 

(Table 00096) 

Call VBE/AF v1.0P function "DrawRect" with: 


EAX = left coordinate 

EBX = top coordinate 

ECX = right coordinate 

EDX = bottom coordinate 

Desc: draw a solid rectangle in the currently-active foreground color and 

mix, omitting the rightmost X coordinate and bottom-most scan line 

Note: results are undefined if EAX>ECX or EBX>EDX; nothing will be drawn if 

EAX=ECX or EBX=EDX 

SeeAlso: #00089,#00094,#00095,#00097 

(Table 00097) 

Call VBE/AF v1.0P function "DrawLine" with: 


EAX = ??? (specified this way in the draft documentation!) 

EBX = ??? 

ECX = ??? 

-140-




EDX = ??? 

ESI = ??? 

Desc: draw a solid line in the currently-active foreground color and mix, 

given the Bresenham parameters 

SeeAlso: #00089,#00094,#00096,#00098 


(Table 00098) 

Call VBE/AF v1.0P function "DrawPattScan" with: 


EAX = X1 coordinate 

EBX = Y coordinate 

ECX = X2 coordinate 

DL = 8-bit stipple pattern 

Desc: draw a patterned horizontal line from (X1,Y) to (X2,Y) in the 

currently-active foreground color and mix, omitting the pixel at 

the largest X coordinate 

Note: for each pixel in the line, if DL bit (X mod 8) is set, the pixel is 

drawn, and left untouched if the bit is clear 

SeeAlso: #00089,#00096,#00097,#00094,#00099,#00107 

(Table 00099) 

Call VBE/AF v1.0P function "BitBlt" with: 


DS:ESI -> BitBlt parameter block (see #00100) 

BL = mix operation 

00h replace 

01h XOR 

02h OR 

03h AND 

SeeAlso: #00089,#00094,#00098,#00101,#00107 

Format of VBE/AF BitBlt parameter block: 


00h WORD left coordinate of source rectangle 

02h WORD top coordinate of source rectangle 

04h WORD right coordinate of source rectangle 

06h WORD bottom coordinate of source rectangle 

08h WORD left coordinate of destination rectangle 

0Ah WORD top coordinate of destination rectangle 

0Ch BYTE horizontal direction: 00h = decrement X, 01h = increment X 

0Dh BYTE vertical direction: 00h = decrement Y, 01h = increment Y 

-141-




Notes: the rightmost pixel(s) and bottom-most scan line are not copied 

the horizontal/vertical direction flags are used to ensure correct 

copies when the source and destination rectangles overlap 



(Table 00101) 

Call VBE/AF v1.0P function "TransBitBlt" with: 




00h replace 

01h XOR 

02h OR 

03h AND 

ECX = transparent color 

Desc: copy a rectangular area from one location to another, treating pixels 

with the specified color as transparent (leaving the destination 

unchanged) 

SeeAlso: #00089,#00099,#00102,#00107 

(Table 00102) 

Call VBE/AF v1.0P function "MonoBitBlt" with: 




00h replace 

01h XOR 

02h OR 

03h AND 

BH = bit-plane from which to read 

Desc: copy a rectangular area from one location to another, expanding a 

single bit of each source pixel 

SeeAlso: #00089,#00099,#00101 

(Table 00103) 

Call VBE/AF v1.0P function "SetCursor" with: 


DS -> application's data segment 

ESI -> 32x32 cursor data, in Windows 3.1 cursor-file format 

(32 DWORDs of XOR mask followed by 32 DWORDs of AND mask) 

SeeAlso: #00089,#00094,#00104,#00105 

-142-


(Table 00104) 

Call VBE/AF v1.0P function "SetCursorPos" with: 


EAX = cursor X coordinate 

EBX = cursor Y coordinate 

CL = cursor's X hotspot 

CH = cursor's Y hotspot 

SeeAlso: #00089,#00103,#00105 




(Table 00105) 

Call VBE/AF v1.0P function "SetCursorColor" with: 


AL = 8-bit color index, or color's Red value 

AH = color's Green value (16-bpp, 24-bpp, 32-bpp modes) 

BL = color's Blue value (16-bpp, 24-bpp, 32-bpp modes) 

SeeAlso: #00089,#00103,#00104,#00106 

(Table 00106) 

Call VBE/AF v1.0P function "ShowCursor" with: 


AL = new visibility (00h hide cursor, 01h show cursor) 

SeeAlso: #00089,#00103,#00104,#00105 

(Table 00107) 

Call VBE/AF v1.0P function "WaitTillIdle" with: 


Desc: pause until the hardware accelerator has completed all pending 

operations 

SeeAlso: #00089,#00108,#00109 

(Table 00108) 

Call VBE/AF v1.0P function "EnableDirectAccess" with: 


SeeAlso: #00089,#00109,#00107,AX=4F05h,#00078,#00080 

(Table 00109) 

Call VBE/AF v1.0P function "DisableDirectAccess" with: 


SeeAlso: #00089,#00108 

--------V-104F0C----------------------------- 

-143-




INT 10 - VESA SuperVGA BIOS - RESERVED FOR FUTURE SVGA FUNCTIONS 

AX = 4F0Ch-4F0Fh 


--------V-104F0B----------------------------- 

INT 10 - Diamond Viper V330 - ??? 

AX = 4F0Bh 

ECX = ??? 

??? 


AH = status 


ECX = ??? 

??? 

01h failed 

Note: in BIOS v1.62, ECX is in multiples of 10000 (decimal) for both input 

and output, and this function never fails 

--------p-104F10BL00------------------------- 

INT 10 - VESA VBE/PM (Power Management) v1.0+ - GET CAPABILITIES 

AX = 4F10h 

BL = 00h 

ES:DI = 0000h:0000h (reserved for future use as pointer to info block) 

Return: AL = 4Fh if function supported (installed) 

AH = call status 


else failed 

---if successful--- 

BL = VBE/PM version (bits 7-4: major, bits 3-0: minor) 

BH = supported states (see #00110) 

ES:DI unchanged 

Index: installation check;VESA VBE/Power Management|VESA DPMS 

SeeAlso: AX=4F10h/BL=01h,AX=4F10h/BL=02h 


Bitfields for VESA VBE/PM supported power states: 


0 standby 

1 suspend 

2 off 

3 reduced on 

--------p-104F10BL01------------------------- 

INT 10 - VESA VBE/PM (Power Management) v1.0+ - SET DISPLAY POWER STATE 

AX = 4F10h 

-144-


BL = 01h 

BH = new state (see #00111) 




else failed 

SeeAlso: AX=4F10h/BL=00h,AX=4F10h/BL=02h,AX=A00Ch 




(Table 00111) 

Values for VESA VBE/PM power state: 

00h On 

01h standby 

02h suspend 

04h Off 

08h reduced On (for flat screens) 

--------p-104F10BL02------------------------- 

INT 10 - VESA VBE/PM (Power Management) v1.0+ - GET DISPLAY POWER STATE 

AX = 4F10h 

BL = 02h 




BH = current power state (see #00111) 

else failed 

SeeAlso: AX=4F10h/BL=00h,AX=4F10h/BL=01h,AX=A00Dh 

--------V-104F11----------------------------- 

INT 10 - VESA VBE/FP (Flat Panel Interface) - API 

AX = 4F11h 

BL = function 

00h installation check / get capabilities 

other registers vary by function 

Return: varies by function 

--------V-104F12----------------------------- 

INT 10 - VESA VBE/CI (Cursor Interface) - API 

AX = 4F12h 

BL = function 



SeeAlso: AX=4F4Dh 

--------s-104F13BX0000----------------------- 

INT 10 - VESA VBE/AI (Audio Interface) - INSTALLATION CHECK 

-145-




AX = 4F13h 

BX = 0000h 


AH = status 


BX = version (0010h for 1.00 -- note nonstandard value!) 

01h failed 

SeeAlso: AX=4F13h/BX=0001h,AX=4F13h/BX=0005h 

--------s-104F13BX0001----------------------- 

INT 10 - VESA VBE/AI (Audio Interface) - LOCATE DEVICE 

AX = 4F13h 

BX = 0001h 

CX = 0000h ??? 

DX = type of device 

0001h Wave device 

0002h MIDI device 

0003h Volume device 


AH = status 


CX = handle [returned 1 for DX=1 and 3, and 2 for DX=2] 

01h failed 


--------s-104F13BX0002----------------------- 

INT 10 - VESA VBE/AI (Audio Interface) - QUERY DEVICE 

AX = 4F13h 

BX = 0002h 

CX = handle 

DX = query 

0001h return length of GeneralDeviceClass 

0002h return copy of GeneralDeviceClass (see #00112) 

0003h return length of Volume Info Structure 

0004h return copy of Volume Info Structure (see #00122) 

0005h return length of Volume Services Structure 

0006h return copy of Volume Services Structure (see #00124) 

0007h-000Fh reserved 

0010h-FFFFh device-specific 

SI:DI -> buffer (functions 0002h,0004h,0006h) 


AH = status 



-146-




SI:DI = length (functions 1,3,5) 

SI:DI buffer filled (functions 2,4,6) 

01h failed 

Note: functions 0003h to 0006h are only supported for the Volume device 


Format of GeneralDeviceClass structure: 


00h 4 BYTEs name of the structure ("GENI") 

04h DWORD structure length 

08h WORD type of device (1=Wave, 2=MIDI) 

0Ah WORD version of VESA driver support (0100h for 1.00) 

10h var for CX=handle for Wave device: 

Wave Info structure (see #00113) 

some bytes ??? 

for CX=handle for MIDI device: 

MIDI Info Structure (see #00118) 

first 8 bytes of MIDI Service Structure ??? 

SeeAlso: #00122,#00124 

Format of WAVE Info Structure: 


00h 4 BYTEs name of the structure ("WAVI") 

04h DWORD structure length [0000007Eh] 

08h DWORD driver software version [00000003h] 

0Ch 32 BYTEs vendor name, etc. (ASCIZ string) 

2Ch 32 BYTEs vendor product name 

4Ch 32 BYTEs vendor chip/hardware description 

6Ch BYTE installed board number 

6Dh 3 BYTEs unused data 

70h DWORD feature bits (see #00114) 

74h WORD user determined preference field 

76h WORD memory required for driver use [0200h] 

78h WORD number of timer tick callbacks per second [0000h] 

7Ah WORD channels: 1 = mono, 2 = stereo 

stereo is assumed to be interleaved data 

7Ch WORD bitfield of max sample sizes (see #00115) 


Bitfields for Wave feature bits: 


0 8000hz Mono Playback 

-147-


1 8000hz Mono Record 

2 8000hz Stereo Record 

3 8000hz Stereo Playback 

4 8000hz Full Duplex Play/Record 

















27 driver must pre-handle the data 

28 Variable Sample mono playback 

29 Variable Sample stereo playback 

30 Variable Sample mono record 

31 Variable Sample stereo record 




(Table 00115) 

Values for Sample data size: 

01h 8bit play 

02h 16bit play 

10h 8bit record 

20h 16bit record 

Format of WAVE Audio Services structure: 


00h 4 BYTEs name of the structure 


08h 16 BYTEs for future expansion 

---entry points (details???)--- 

18h DWORD DeviceCheck 

11h compression (see also #00117) 

-148-


12h driver state 

13h get current pos 

14h sample rate 

15h set preference 

16h get DMA,IRQ 

17h get IO address 

18h get mem address 

19h get mem free 

1Ah full duplex 

1Bh get block size 

1Ch get PCM format 

1Dh enable PCM format 

80h-.. vendors can add DevChks above 0x80 

1Ch DWORD PCMInfo 

20h DWORD PlayBlock 

24h DWORD PlayCont 

28h DWORD RecordBlock 

2Ch DWORD RecordCont 

30h DWORD PauseIO 

34h DWORD ResumeIO 

38h DWORD StopIO 

3Ch DWORD WavePrepare 

40h DWORD WaveRegister 

44h DWORD GetLastError 

01h unsupported feature/function 

02h bad sample rate 

03h bad block length 

04h bad block address 

05h app. missed an IRQ 

06h don't understand the PCM size/format 

80h-.. vendors specific errors 

48h DWORD TimerTick 

4Ch DWORD ApplPSyncCB: CallBack: play filled in by the app 

50h DWORD ApplRSyncCB: CallBack: rec filled in by the app 

SeeAlso: #00120,#00124 




(Table 00117) 

Values for type of compression: 

01h IMA play 

02h ALAW play 

03h ULAW play 

-149-


11h IMA record 

12h ALAW record 

13h ULAW record 




Format of MIDI Info Structure: 


00h 4 BYTEs name of the structure ("MIDI") 






6Ch BYTE installed board number 

6Dh 3 BYTEs unused data 

70h 14 BYTEs the patch library file name [OPL2.BNK 00..] 

7Eh DWORD feature bits (see #00119) 

80h WORD user determined preference field 

82h WORD memory required for driver use 

84h WORD # of timer tick callbacks per second 

86h WORD max # of tones (voices, partials) 

SeeAlso: #00112,#00120,#00122 

Bitfields for MIDI feature bits: 


0-3 reserved for GM extensions 

4 Transmitter/Receiver only 

5 Patches preloaded 

6 MIDI receive has time stamp 

8 MIDI interrupt driven input supported 

9 MIDI polled input supported 

10 MIDI remote patches supported 

Format of MIDI Service structure: 


00h 4 BYTEs name of the structure ("MIDS") 


08h 16 WORDs patches loaded table bit field 

28h 16 BYTEs for future expansion 


38h DWORD device check 

11h return available tones 

-150-


12h return TRUE/FALSE if patch is understood 

13h set preference 

14h allow/disallow voice stealing 

15h get FIFO sizes 

16h get DMA,IRQ 


18h get mem address 

19h get mem free 


3Ch DWORD global reset 

40h DWORD MIDI msg 

44h DWORD poll MIDI 

48h DWORD preload patch 

4Ch DWORD unload patch 

50h DWORD timer tick 

54h DWORD get last error 


02h unknown patch type (see #00121) 

03h all tones are used 

04h messages are out of sync 

05h an incoming patch was incomplete 

06h an incoming patch couldn't be stored 

07h had to drop an incoming byte 

08h driver is failing a patch download 

80h-.. vendors specific errors 

58h DWORD Patch Block free callback 

5Ch DWORD MIDI byte avail. callback 

SeeAlso: #00116,#00124 




(Table 00121) 

Values for MIDI Registered Patch Types: 

10h OPL2 

11h OPL3 

Format of Volume Info Structure: 


00h 4 BYTEs name of the structure ("VOLI") 

04h DWORD structure length (00000092h) 




-151-



6Ch BYTE installed board number (0 for 1st/only board) 

6Dh 3 BYTEs unused data (0) 

70h 24 BYTEs text name of the mixer channel 

88h DWORD features bits (see #00123) 

8Ch WORD minimum volume setting 

8Eh WORD maximum volume setting 

90h WORD attenuation/gain crossover 

SeeAlso: #00112,#00124 




Bitfields for Volume feature bits: 


0 Stereo Volume control available 

2 Low Pass Filter is available 

3 High Pass Filter is available 

4 Parametric Tone Control is available 

5 selectable output paths 

8 Azimuth Field positioning supported 

9 Phi Field positioning supported 

10-30 unused??? 

31 Master Volume device 

Format of Volume Services Structure: 


00h 4 BYTEs name of the structure ("VOLS") 

04h DWORD structure length (00000038h) 

08h 16 BYTEs 16 bytes for future expansion (0) 


18h DWORD device check 

0011h filter range 

0012h filter setting 

0013h filter current 

0014h tone range 

0015h tone setting 

0016h tone current 

0017h path 



1Ch DWORD set vol to an absolute setting 

01h User master volume setting 

02h application master volume setting 

-152-


20h DWORD set 3D volume 

24h DWORD tone control 

28h DWORD filter control 

2Ch DWORD output path 

30h DWORD reset channel 

34h DWORD get last error 


02h out of range parameter value 

80h+ vendor-specific errors 

SeeAlso: #00116,#00120 

--------s-104F13BX0003----------------------- 

INT 10 - VESA VBE/AI (Audio Interface) - OPEN DEVICE 

AX = 4F13h 

BX = 0003h 

CX = handle 

DX = API set (16/32-bit) 

SI = segment ??? 


AH = status 


SI:CX -> memory ??? 

01h failed 

SeeAlso: AX=4F13h/BX=0000h,AX=4F13h/BX=0002h,AX=4F13h/BX=0004h 

--------s-104F13BX0004----------------------- 

INT 10 - VESA VBE/AI (Audio Interface) - CLOSE DEVICE 

AX = 4F13h 

BX = 0004h 

CX = handle 


AH = status 


01h failed 

SeeAlso: AX=4F13h/BX=0000h,AX=4F13h/BX=0003h,AX=4F13h/BX=0005h 

--------s-104F13BX0005----------------------- 

INT 10 - VESA VBE/AI (Audio Interface) - UNINSTALL DRIVER 

AX = 4F13h 

BX = 0005h 


AH = status 


01h failed 




-153-





--------s-104F13BX0006----------------------- 

INT 10 - VESA VBE/AI (Audio Interface) - DRIVER CHAIN/UNCHAIN 

AX = 4F13h 

BX = 0006h 


AH = status 


01h failed 


----------104F14----------------------------- 

INT 10 - VESA OEM Extensions - API 

AX = 4F14h 

BL = function 




Note: this function is provided for OEMs to implement system-specific 

functionality in a VESA-compatible manner 

----------104F14----------------------------- 

INT 10 - VESA OEM Extensions - Matrox Millenium (BIOS v2.1) 

AX = 4F14h 

BL = function 


ES:DI -> 256-byte buffer for Matrox-specific information 

(see #00125) 

Return: ES:DI buffer filled 

01h read/write MGA indexed data register 

BH = direction (00h = write, else read) 

CL = register number (80h for most-recently used register) 

CH = new value, if writing 

Return: CH = current value, if reading 

02h read/write register in MGA control space 

BH = direction and size 

bit 4: read register instead of writing 

bits 1-0: data size (00 = BYTE, 01 = WORD, 10 = DWORD) 

SI = register address 

CL/CX/ECX = new value if writing 

Return: CL/CX/ECX = current value if reading 

03h read PINS byte 

SI = offset of byte within PINS data (see #00126) 


-154-




Return: CL = value of specified PINS byte 

04h ??? (related to PLL programming) 

DX = ??? 

Return: CL,EDX destroyed 

05h read BIOS byte 

SI = offset of byte relative to start of BIOS image 

Return: CL = specified byte 

else 

Return: AX = FFFFh 


AH = status 


01h failed 

Note: most of this info is from http:\\grafi.ii.pw.edu.pl\gbm\matrox 

SeeAlso: MEM C000h:7FFCh"Matrox" 


Format of Matrox-specific VESA extensions information: 


00h 7 BYTEs signature "VBE/MGA" 

07h 10 BYTEs ??? (01h 01h 00h 00h 00h 00h 00h 00h 00h 07h) 

11h WORD BIOS version (high byte = major, low byte = one-digit minor) 

13h DWORD -> manufacturer name (ASCIZ "Matrox") 

17h DWORD -> ASCIZ card name 

1Bh DWORD -> ??? ASCIZ string (empty string on card examined) 

1Fh DWORD -> ASCIZ vendor name 

23h DWORD -> ASCIZ BIOS file base name 

27h DWORD -> PINS 

2Bh WORD video memory size in 64K units 

2Dh DWORD linear address of linear frame buffer 

31h DWORD linear address of MGA control aperture 

35h WORD PCI bus/device for card??? 

37h 201 BYTEs unused??? (cleared to 00h) 

Format of Matrox PINS data (version 3.0): 


00h 2 BYTEs signature ".A" (2Eh 41h) 

02h BYTE structure length (40h for v3.0) 

03h BYTE ??? 

04h WORD PINS version (high byte = major, low byte = minor) 

06h WORD date last programmed 

08h WORD number of times programmed 

-155-


0Ah WORD flags 

0Ch 8 BYTEs ASCII serial number, three letters + five digits 

14h 8 BYTEs ??? 

1Ch 4 BYTEs ASCII card version 

20h DWORD PCB revision 

24h BYTE maximum RAMDAC frequency in MHz (less 100) 

25h BYTE maximum RAMDAC frequency??? 

26h BYTE maximum RAMDAc frequency??? 

27h BYTE ??? 

28h BYTE ??? timing data? 

29h BYTE ??? 

2Ah BYTE ??? 

2Bh BYTE ??? 

2Ch BYTE ??? 

2Dh BYTE ??? 

2Eh BYTE ??? 

2Fh BYTE ??? 

30h 4 BYTEs ??? 

34h BYTE ??? 

35h BYTE ??? 

36h BYTE ??? 

37h BYTE memory size in 64K units 

38h BYTE ??? 

39h BYTE ??? 

3Ah BYTE ??? 

3Bh BYTE ??? 

3Ch BYTE ??? 

3Dh BYTE ??? 

3Eh BYTE ??? 

3Fh BYTE checksum (to make sum of all bytes MOD 256 == 00h) 

--------V-104F15BL00------------------------- 

INT 10 - VESA VBE/DC (Display Data Channel) - INSTALLATION CHECK / CAPABILITIES 

AX = 4F15h 

BL = 00h 


AH = status 


BX = ??? 

01h failed 

??? 





-156-


--------V-104F15BL01------------------------- 

INT 10 - VESA VBE/DC (Display Data Channel) - READ EDID 

AX = 4F15h 

BL = 01h 

CX = 0000h 

DX = 0000h 

ES:DI -> 128-byte buffer for EDID record (see #00127) 


AH = status 



01h failed (e.g. non-DDC monitor) 

SeeAlso: AX=4F15h/BL=00h,AX=4F15h/BL=02h,I2C A0h"DDC" 




Format of VESA EDID record: 


00h 8 BYTEs padding (all FFh, or 00h FFh..FFh 00h) 

08h WORD big-endian manufacturer ID (see #00136) 

bits 14-10: first letter (01h='A', 02h='B', etc.) 

bits 9-5: second letter 

bits 4-0: third letter 

0Ah WORD EDID ID code -- identifies monitor model 

0Ch DWORD serial number or FFFFFFFFh 

for "MAG", subtract 7000000 to get actual serial number 

for "OQI", subtract 456150000 

for "PHL", subtract ??? 

for "VSC", subtract 640000000 

10h BYTE week number of manufacture 

11h BYTE manufacture year - 1990 

12h BYTE EDID version 

13h BYTE EDID revision 

14h BYTE video input type (see #00129) 

15h BYTE maximum horizontal size in cm 

16h BYTE maximum vertical size in cm 

17h BYTE gamma factor (gamma = 1.0 + factor/100, so max = 3.55) 

18h BYTE DPMS flags (see #00128) 

19h BYTE chroma information: green X'/Y' and red X'/Y' 

1Ah BYTE chroma information: white X'/Y' and blue X'/Y' 

1Bh BYTE chroma information: red Y 

1Ch BYTE chroma information: red X 

1Dh BYTE chroma information: green Y 

-157-


1Eh BYTE chroma information: green X 


1Fh BYTE chroma information: blue Y 

20h BYTE chroma information: blue X 

21h BYTE chroma information: white Y 

22h BYTE chroma information: white X 

23h BYTE established timings 1 (see #00130) 

24h BYTE established timings 2 (see #00131) 

25h BYTE manufacturer's reserved timing or 00h for none 

bit 7: 1152x870 @ 75 Hz (Mac II, Apple) 

26h 8 WORDs standard timing identification 

resolution (low byte) and vertical frequency (high byte) for 

each of eight modes (see #00132) 

X resolution = (lowbyte + 31) * 8 

36h 18 BYTEs detailed timing description #1 (see #00133) 

(v1.1) alternately, text identification (see #00135) 

48h 18 BYTEs detailed timing description #2 


5Ah 18 BYTEs detailed timing description #3 


6Ch 18 BYTEs detailed timing description #4 


7Eh BYTE unused??? 

7Fh BYTE checksum 

(radix-complement: 256-low byte of 16-bit sum of 00h-7Eh) 



Bitfields for DPMS EDID flags: 


2-0 unused??? 

3 display type 

=0 non-RGB multicolor 

=1 RGB color 

4 unused??? 

5 Active Off supported 

6 Suspend supported 

7 Standby supported 


Bitfields for DPMS input signal type: 


0 separate sync 

1 composite sync 

-158-


2 sync on green 

4-3 unused??? 

6-5 voltage level 

00 0.700V/0.300V (1.00 Vp-p) 

01 0.714V/0.286V 

10 0.100V/0.400V 

11 reserved 

7 =1 digital signal, =0 analog 





Bitfields for DPMS established timings 1: 


0 720x400 @ 70 Hz (VGA 640x400, IBM) 

1 720x400 @ 88 Hz (XGA2) 

2 640x480 @ 60 Hz (VGA) 

3 640x480 @ 67 Hz (Mac II, Apple) 

4 640x480 @ 72 Hz (VESA) 

5 640x480 @ 75 Hz (VESA) 

6 800x600 @ 56 Hz (VESA) 

7 800x600 @ 60 Hz (VESA) 

SeeAlso: #00127,#00131 

Bitfields for DPMS established timings 2: 


0 800x600 @ 72 Hz (VESA) 

1 800x600 @ 75 Hz (VESA) 

2 832x624 @ 75 Hz (Mac II) 

3 1024x768 @ 87 Hz interlaced (8514A) 

4 1024x768 @ 60 Hz (VESA) 

5 1024x768 @ 70 Hz (VESA) 

6 1024x768 @ 75 Hz (VESA) 

7 1280x1024 @ 75 Hz (VESA) 

SeeAlso: #00127,#00130 

Bitfields for DPMS standard timing information: 


5-0 vertical refresh frequency - 60 (Hz) 

7-6 aspect ratio (Y resolution = X resolution * aspect ratio) 

00 ??? 

01 0.75 

10 0.8 

-159-




11 0.5625 

Note: if both bytes of the timing are 00h or 01h, then the Standard Timing 

is "None" 



Format of Detailed Timing Description: 


00h BYTE horizontal frequency in kHz (if 00h, may be text)(see #00135) 

01h BYTE vertical frequency in Hz 

02h BYTE horizontal active time (pixels) and X resolution 

03h BYTE horizontal blanking time (pixels) 

04h BYTE horizontal active time 2 / horizontal blanking time 2 

05h BYTE vertical active time (lines) and Y resolution 

06h BYTE vertical blanking time (lines) 

07h BYTE vertical active time 2 / vertical blanking time 2 

08h BYTE horizontal sync offset (pixels) 

09h BYTE horizontal sync pulsewidth (pixels) 

0Ah BYTE vertical sync offset / vertical sync pulsewidth 

0Bh BYTE vertical/horizontal sync offset 2 / vert/hor. sync pulsewidth 2 

0Ch BYTE horizontal image size (mm) 

0Dh BYTE vertical image size (mm) 

0Eh BYTE horizontal image size 2 / vertical image size 2 

0Fh BYTE horizontal border (pixels) 

10h BYTE vertical border (lines) 

11h BYTE type of display (see #00134) 

SeeAlso: #00127,#00135 

Bitfields for EDID detailed display type: 


7 interlaced 

6-5 stereo mode 

00 normal display (no stereo) 

01 stereo, right stereo sync high 

10 stereo, left stereo sync high 

11 undefined 

4-3 sync type 

00 sync analog composite 

01 sync bipolar analog composite 

10 sync digital composite 

11 sync digital separate 

---sync digital separate--- 

-160-


2 vertical sync polarity (0 = negative, 1 = positive) 

1 horizontal sync polarity (0 = negative, 1 = positive) 

---other sync types--- 

2 serrate 

1 sync location (0 = on green, 1 = on RGB) 

------ 

0 not used??? 





Format of EDID Text Identification Strings: 


00h 3 BYTEs 00h 00h 00h (to distinguish from detailed timing description) 

03h BYTE text identifier 

FFh serial number 

FEh vendor name 

FDh vertical/horizontal frequency range 

FCh model name 

---frequency range--- 

04h BYTE 00h ??? 

05h BYTE minimum vertical refresh frequency in Hz 

06h BYTE maximum vertical refresh 

07h BYTE minimum horizontal frequency in kHz 

08h BYTE maximum horizontal frequency 

09h BYTE FFh ??? 

---other--- 

04h 14 BYTEs text, may be terminated with either a NUL (00h) or LF (0Ah) 


(Table 00136) 

Values for manufacturer ID: 

"ACT" Targa 

"ADI" ADI Corporation http://www.adi.com.tw 

"AOC" AOC International (USA) Ltd. (see #00137) 

"API" Acer America Corp. (see #00138) 

"APP" Apple Computer, Inc. (see #00139) 

"ART" ArtMedia 

"AST" AST Research (see #00140) 

"CPL" Compal Electronics, Inc. / ALFA (see #00141) 

"CPQ" COMPAQ Computer Corp. (see #00142) 

"CTX" CTX - Chuntex Electronic Co. (see #00143) 

"DEC" Digital Equipment Corporation (see #00144) 

-161-


"DEL" Dell Computer Corp. (see #00145) 

"DPC" Delta Electronics, Inc. (see #00146) 

"DWE" Daewoo Telecom Ltd (see #00147) 

"ECS" ELITEGROUP Computer Systems (see #00148) 

"EIZ" EIZO (see #00149) 

"FCM" Funai Electric Company of Taiwan 

"GSM" LG Electronics Inc. (GoldStar Technology, Inc.) (see #00158) 

"GWY" Gateway 2000 

"HEI" Hyundai Electronics Industries Co., Ltd. (see #00150) 

"HIT" Hitachi (see #00151) 

"HSL" Hansol Electronics (see #00152) 

"HTC" Hitachi Ltd. / Nissei Sangyo America Ltd. (see #00153) 

"HWP" Hewlett Packard (see #00154) 

"IBM" IBM PC Company (see #00155) 

"ICL" Fujitsu ICL (see #00156) 

"IVM" Idek Iiyama North America, Inc. (see #00157) 

"KFC" KFC Computek 

"LKM" ADLAS / AZALEA 

"LNK" LINK Technologies, Inc. 

"LTN" Lite-On 

"MAG" MAG InnoVision (see #00159) 

"MAX" Maxdata Computer GmbH 

"MEI" Panasonic Comm. & Systems Co. (see #00168) 

"MEL" Mitsubishi Electronics (see #00160) 

"MIR" miro Computer Products AG (see #00161) 

"MTC" MITAC 

"NAN" NANAO (see #00162) 

"NEC" NEC Technologies, Inc. (see #00163) 

"NOK" Nokia (see #00164) 

"OQI" OPTIQUEST (see #00165) 

"PBN" Packard Bell 

"PGS" Princeton Graphic Systems (see #00166) 

"PHL" Philips Consumer Electronics Co. (see #00167) 

"REL" Relisys 

"SAM" Samsung (see #00169) 

"SDI" Samtron (see #00170) 

"SMI" Smile 

"SNI" Siemens Nixdorf 

"SNY" Sony Corporation 

"SPT" Sceptre 

"SRC" Shamrock Technology 




-162-


"STP" Sceptre 

"TAT" Tatung Co. of America, Inc. (see #00171) 

"TRL" Royal Information Company (see #00172) 

"TSB" Toshiba, Inc. 

"UNM" Unisys Corporation 

"VSC" ViewSonic Corporation (see #00173) 

"WTC" Wen Technology 

"ZCM" Zenith Data Systems 

"___" Targa 





(Table 00137) 

Values for AOC monitor EDID: 

A566h AOC SPECTRUM 5Nlr 

A782h AOC SPECTRUM 7Nlr 

D350h AOC SPECTRUM 4V, 4VA, 4Vlr, 4VlrA 

D566h AOC SPECTRUM 5Vlr, 5VlrA 

E570h AOC SPECTRUM 5Glr 

E750h AOC SPECTRUM 7DlrA 

SeeAlso: #00136,#00138 

(Table 00138) 

Values for Acer monitor EDID: 

0037h AcerView 55 

424Ch AcerView 76ie 

440Bh AcerView 11D 

4421h AcerView 33D 

4522h AcerView 7134e 



454Ch AcerView 7176ie 

454Eh AcerView 7178ie 

4938h AcerView 7156i 

494Ch AcerView 76i 

494Eh AcerView 78i 

4962h AcerView 98i 

4C21h AcerView 33DL 

4C22h AcerView 34TL 

4C37h AcerView 55L 

4C38h AcerView 56L 

4E4Ch AcerView 76N 

-163-


5321h AcerView 7133s 



5338h AcerView 7156s, 7156is 

534Ch AcerView 7176is 

5422h AcerView 34T 

SeeAlso: #00136,#00137,#00140 




(Table 00139) 

Values for Apple Computer monitor EDID: 

0352h AppleVision 850 


(Table 00140) 

Values for AST monitor EDID: 

8001h ASTVision 4V 

8002h ASTVision 4I 

8003h ASTVision 4N 

8004h ASTVision 4L 



8007h ASTVision 7H 

8008h ASTVision 20H 

8009h AST Sabre 

800Ah ASTVision 5V 

SeeAlso: #00136,#00127,#00138,#00141 

(Table 00141) 

Values for ALFA monitor EDID: 

096Bh ALFA TH-450 

SeeAlso: #00136,#00140,#00142 

(Table 00142) 

Values for Compaq monitor EDID: 

0011h COMPAQ 1024 

0012h COMPAQ 1024 

0013h COMPAQ 1024 

0014h COMPAQ 1024 

0015h COMPAQ 1024 

0016h COMPAQ 1024 

0017h COMPAQ PRB 

-164-




001Ah COMPAQ PRB 



0022h COMPAQ 151FS 








002Ah COMPAQ PRB 

002Bh COMPAQ PRB 

002Ch COMPAQ PRB 

002Dh COMPAQ 171FS 

002Eh COMPAQ 171FS 

002Fh COMPAQ 171FS 





0040h COMPAQ QVision 200 










0100h COMPAQ 1024 

0146h COMPAQ 1024 

0147h COMPAQ 1024 





034Ah COMPAQ 151FS 




-165-


034Bh COMPAQ 151FS 







0846h COMPAQ PRA 




084Ah COMPAQ PRA 

084Bh COMPAQ PRA 

084Ch COMPAQ PRA 

084Dh COMPAQ PRA 





0A46h COMPAQ PRA 




0A4Ah COMPAQ PRA 

0A4Bh COMPAQ PRA 

0A4Ch COMPAQ PRA 

0A4Dh COMPAQ PRA 

0D46h COMPAQ 140 




0D4Ah COMPAQ 140 

0D4Bh COMPAQ 140 

0D4Ch COMPAQ 140 

0D4Dh COMPAQ 140 

0F46h COMPAQ 150 




0F4Ah COMPAQ 150 

0F4Bh COMPAQ 150 




-166-


0F4Ch COMPAQ 150 

0F4Dh COMPAQ 150 

SeeAlso: #00136,#00141,#00143 




(Table 00143) 

Values for "CTX" monitor EDID: 

1451h CTX 1451 

1551h CTX 1551 

1562h CTX 1562 

1565h CTX 1565 

1569h CTX 1569S 15-inch 

1765h CTX 1765 

1785h CTX 1785 XE 

2085h CTX 2085 

2185h CTX 2185 

SeeAlso: #00136,#00142,#00144 

(Table 00144) 

Values for Digital Equipment Corporation monitor EDID: 

06FAh Digital 21" Color (FR-PCXAV-WZ) 

073Ah Digital 17" Color (FR-PCXAV-YZ) 

BA08h Digital 15" Color Monitor (FR-PCXBV-E*) 

DA08h Digital 17" Color Monitor (FR-PCXBV-F*) 

SeeAlso: #00136,#00143,#00145 

(Table 00145) 

Values for Dell monitor EDID: 

139Ah Dell Ultrascan 14XE 

139Bh Dell Ultrascan 14XE 

139Ch Dell Ultrascan 14XE 

139Dh Dell Ultrascan 14XE 

2210h Dell Ultrascan V17X 




2214h Dell Ultrascan 21TE 




3024h Dell VS17X 


-167-





SeeAlso: #00136,#00144,#00146 




(Table 00146) 

Values for Delta Electronics monitor EDID: 

0456h Delta DA-456 



SeeAlso: #00136,#00145,#00147 

(Table 00147) 

Values for Daewoo monitor EDID: 

1423h Daewoo CMC-1423B1 

1427h Daewoo CMC-1427X1 

1502h Daewoo CMC-1502B1 

1505h Daewoo CMC-1505X 

1507h Daewoo CMC-1507X1 

1703h Daewoo CMC-1703B 

5133h Daewoo CMC-1511B 

7044h Daewoo CMC-1704C 

SeeAlso: #00136,#00146,#00148 

(Table 00148) 

Values for ELITEGROUP Computer Systems monitor EDID: 

0001h ECS VERTOS 1401 









SeeAlso: #00136,#00147,#00149 

(Table 00149) 

Values for EIZO monitor EDID: 

0200h EIZO FlexScan F351 


-168-





0206h EIZO FlexScan 6600 

0300h EIZO FlexScan 6500 

0302h EIZO 9060S 

0303h EIZO 9065S 

0305h EIZO FlexScan T563 

0306h EIZO 9070S 

0307h EIZO 9080i 

0308h EIZO 9400i 

0309h EIZO 9500 

030Ah EIZO FlexScan F340iW 

030Ch EIZO FlexScan F552 

030Dh EIZO FlexScan F560iW 

030Fh EIZO FlexScan F760iW 

0310h EIZO FlexScan F780iW 

0311h EIZO FlexScan T560i 

0312h EIZO FlexScan T660i 



038Ch EIZO FlexScan F550iW 

SeeAlso: #00136,#00148,#00150 




(Table 00150) 

Values for Hyundai monitor EDID: 

0B42h Hyundai Deluxscan 21 

12F0h Hyundai Deluxscan 14S 

16D8h Hyundai Deluxscan 15B 

16E8h Hyundai Deluxscan 15G 

16EEh Hyundai Delucscan 15G+ 

1E02h Hyundai Deluxscan 17 Pro 

1EB8h Hyundai Deluxscan 17B 

1EBEh Hyundai Deluxscan 17B+ 

5864h Hyundai DeluxScan 15 Pro 

B81Eh Hyundai DeluxScan 17 

SeeAlso: #00136,#00149,#00151 

(Table 00151) 

Values for Hitachi monitor EDID: 

1717h Hitachi Accuvue GX17L 

-169-


1727h Hitachi HM1764 






4711h Hitachi Accuvue UX4721 

4810h Hitachi Accuvue GX20 

4811h Hitachi Accuvue GX21 



4830h Hitachi Accuvue GX20H 





SeeAlso: #00136,#00150,#00152 




(Table 00152) 

Values for Hansol Electronics monitor EDID: 

0579 Hansol Electronics Mazellan14px 

057A Hansol Electronics Mazellan400A 

05DD Hansol Electronics Mazellan15ax 

A605 Hansol Electronics Mazellan17px 

SeeAlso: #00136,#00151,#00153 

(Table 00153) 

Values for Hitachi, Ltd. monitor EDID: 

AB6Fh CM-1711M 

ABC2h CM-2112M 

ABC7h CM-2111M 

ABCCh CM-2110M 

ABE0h Hitachi, Ltd CM802 



ABEAh Hitachi, Ltd CM803 

ABF4h Hitachi, Ltd CM701 

AFC8h Hitachi, Ltd CM500 

AFD2h Hitachi, Ltd CM600 

AFD7h Hitachi, Ltd CM611 

SeeAlso: #00136,#00152,#00154 

-170-


(Table 00154) 

Values for Hewlett-Packard monitor EDID: 

0AF0h HP D2800A Ultra VGA 1600 21" 

0AF6h HP D2806A Ergo Ultra VGA 15" 

0AF8h HP D2808 1024 Low Emission 

0AFFh HP D2815A 1024 Low Emission 14" 

0F11h HP D3857A Multi Media 15" 

0F12h HP D3858A Multi Media 14" 

SeeAlso: #00136,#00151,#00155 




(Table 00155) 

Values for IBM monitor EDID: 

198Eh IBM G41 

198Fh IBM G50 

1990h IBM G70 

1991h IBM G200 

1999h IBM P50 

199Ah IBM P70 

199Bh IBM P200 

1BB7h IBM 7095 

1BB9h IBM 7097 

2112h IBM 2112 

2113h IBM 2113 

2114h IBM 2114 

2115h IBM 2115 

2117h IBM 2117 

2215h IBM 2215 

2238h IBM 2238 

2248h IBM 2248 

2264h IBM 2264 

2535h IBM 9525-0X1 

26ACh IBM Aptiva 9900 

27ADh IBM Aptiva 9901 

6312h IBM 6312 

6314h IBM 6314 

6315h IBM 6315 

6317h IBM 6317 

6319h IBM 6319 

6321h IBM 6321 

6322h IBM 6322 

-171-


6324h IBM 6324 

6325h IBM 6325 

6327h IBM 6327 

8504h IBM 8504 

8511h IBM 8511 

8512h IBM 8512 

8513h IBM 8513 

8514h IBM 8514 

8515h IBM 8515 

8517h IBM 8517 

8518h IBM 8518 

9504h IBM 9504 

9515h IBM 9515 

9517h IBM 9517 

9518h IBM 9518 

9521h IBM 9521 

9524h IBM 9524 

9525h IBM 9525 

9527h IBM 9527 

SeeAlso: #00136,#00154,#00156 




(Table 00156) 

Values for Fujitsu ICL monitor EDID: 

0100h Fujitsu ICL ErgoPro 211v 

0200h Fujitsu ICL ErgoPro 171p 


0700h Fujitsu ICL ErgoPro 151p 

0800h Fujitsu ICL ErgoPro 151p AutoBrite 

0A00h Fujitsu ICL ErgoPro 151v 

0B00h Fujitsu ICL ErgoPro 141v 

0D00h Fujitsu ICL ErgoPro 141p 

0F00h Fujitsu ICL ErgoPro 152v 


1600h Fujitsu ICL ErgoPro e153 

1900h Fujitsu ICL ErgoPro x173 

1A00h Fujitsu ICL ErgoPro x173a 

1C00h Fujitsu ICL ErgoPro x152 

1D00h Fujitsu ICL ErgoPro e173 

2200h FUJITSU ErgoPro e154 

2400h FUJITSU ErgoPro x174 

SeeAlso: #00136,#00155,#00157 

-172-


(Table 00157) 

Values for Idek Iiyama North America monitor EDID: 

1700h Iiyama Vision Master MF-8617 

SeeAlso: #00136,#00156,#00158 




(Table 00158) 

Values for LG Electronics monitor EDID: 

36B4h LG StudioWorks 44m 

36B9h LG StudioWorks 44i 

3AA0h LG 1505s 

3AA2h LG StudioWorks 56m 

3AAFh LG StudioWorks 56T 15-inch 

3AB0h LG StudioWorks 5D 

3AB6h LG StudioWorks 5D 

426Ch LG StudioWorks 78i 

426Dh LG StudioWorks 78T 

426Eh LG StudioWorks 76i 

4273h LG StudioWorks 76m 



4278h LG StudioWorks 74i 

427Eh LG StudioWorks 7D 

427Fh LG StudioWorks 78D 

4280h LG StudioWorks 78DT 

4281h LG StudioWorks 7DT 

4284h LG StudioWorks 76T 

42CFh LG 1725s 

4E21h LG StudioWorks 20i 

SeeAlso: #00136,#00157,#00159 

(Table 00159) 

Values for MAG monitor EDID: 

5620h DX1595 

5624h DX15T 

5626h DX1795 

SeeAlso: #00136,#00158,#00160 

(Table 00160) 

Values for Mitsubishi monitor EDID: 

0040h Mitsubishi Diamond Pro 21TX (THN-9105) 

-173-


2040h Mitsubishi Diamond Scan 20H (FR-8905) 

2040h Mitsubishi Diamond Pro 20X (FR-8905B) 

6140h Mitsubishi Diamond Scan 17HX (FFF8705) 

8040h Mitsubishi Diamond Pro 15H (SD-57xxC) 

4040h Mitsubishi Diamond Pro 17TX (TFG-8705) 

408Fh Mitsubishi Diamond Scan 15VX (SD58xx) 

40C0h Mitsubishi Diamond Pro 87TXM (TFM8705) 

SeeAlso: #00136,#00159,#00161 




(Table 00161) 

Values for Miro monitor EDID: 

0721h PROOFSCREEN miroC21107 

6815h miroD1568 


6917h miroD1769 


8520h PROOFSCREEN miroC2085 E 



SeeAlso: #00136,#00160,#00162 

(Table 00162) 

Values for Nanao monitor EDID: 

0000h NANAO USA FlexScan T2-20 

0400h NANAO USA F2-15 


0402h NANAO USA F2-17EX 


0404h NANAO USA FX2-21 

0405h NANAO USA FlexScan T2-17TS 

0406h NANAO FlexScan 6600 

0502h NANAO 9060S 

0503h NANAO 9065S 

0506h NANAO 9070U 

0507h NANAO 9080i 

0508h NANAO 9400i 

0509h NANAO 9500 

050Ah NANAO FlexScan F340iW 

050Bh NANAO FlexScan F550i 

050Ch NANAO FlexScan F550iW 

050Dh NANAO FlexScan F560iW 

-174-


050Eh NANAO FlexScan F750i 

050Fh NANAO FlexScan F760iW 

0510h NANAO FlexScan F780iW 

0511h NANAO FlexScan T560i 

0512h NANAO FlexScan T660i 



0580h NANAO USA FlexScan 6300 

0800h NANAO FlexScan 33F 


0805h NANAO FlexScan 54T 


0900h NANAO FlexScan 6500 

0902h NANAO 9060S 

0906h NANAO 9070U 

0907h NANAO 9080i 

090Ah NANAO FlexScan F347 

090Bh NANAO FlexScan F550i 

090Ch NANAO FlexScan F557 

090Fh NANAO FlexScan 77F 

0910h NANAO FlexScan F780iJ 

0911h NANAO FlexScan T560iJ 

0912h NANAO FlexScan T660iJ 



098Ah NANAO FlexScan F347II 

098Ch NANAO FlexScan 55F 

098Fh NANAO FlexScan 76F 

0991h NANAO FlexScan T567 


SeeAlso: #00136,#00161,#00163 




(Table 00163) 

Values for NEC monitor EDID: 

37FAh NEC MultiSync XV14 

37FBh NEC MultiSync XV14 

3A66h NEC MultiSync C400 

3C00h NEC MultiSync XE15 

3C0Ah NEC MultiSync XP15 

3C14h NEC MultiSync XV15 

3C1Eh NEC MultiSync XE15 

-175-


3D5Eh NEC MultiSync XV15+ 

3D68h NEC MultiSync M500 

3E4Eh NEC MultiSync C500 

43A8h NEC MultiSync XE17 

43B2h NEC MultiSync XE17 

43BCh NEC MultiSync XV17 

4416h NEC MultiSync XP17 

533Eh NEC MultiSync XE21 

53B6h NEC MultiSync XP21 

SeeAlso: #00136,#00162,#00164 




(Table 00164) 

Values for Nokia monitor EDID: 

008Dh NOKIA 449M 

0098h NOKIA 449X 

00A3h NOKIA 447KC 

00A9h NOKIA 447XI 

00ABh NOKIA 447KA 

00ADh NOKIA 447M 

00B7h NOKIA 447W 

00B8h NOKIA 447X 

00BBh NOKIA 447XAV 

00BCh NOKIA 447K 

00D2h NOKIA 445R 

SeeAlso: #00136,#00163,#00165 

(Table 00165) 

Values for OptiQuest monitor EDID: 

3138h OPTIQUEST VA656 

3141h OPTIQUEST 14ES 

3232h OPTIQUEST 1562A-2 

3233h OPTIQUEST 1769DC 

3234h OPTIQUEST 1000S-2 

3332h OPTIQUEST V655 




4637h OPTIQUEST 1769DC 

SeeAlso: #00136,#00164,#00166 

(Table 00166) 

-176-


Values for Princeton Graphics monitor EDID: 

003Bh Princeton EO15 

003Dh Princeton EO17 

SeeAlso: #00136,#00165,#00167 




(Table 00167) 

Values for Philips monitor EDID: 

0200h Philips CM0200 (15C) 

0500h Philips CM0500 (20C) 

0700h Philips CM0700 (20T) 

0800h Philips CM0800 (15B) 

1200h Philips CM1200 (15A) 



2600h Philips 17TCM26 

2800h Philips 17BCM28 

3800h Philips 17ACM38 


700Bh Philips CM0700 (21B) 


SeeAlso: #00136,#00166,#00168 

(Table 00168) 

Values for Panasonic monitor EDID: 

1604h Panasonic TX-D2151W-ES 

1610h Panasonic TX-D2151NM 

SeeAlso: #00136,#00167,#00169 

(Table 00169) 

Values for Samsung monitor EDID: 

0000h Samsung SyncMaster 3Ne 

0100h Samsung SyncMaster 4S 

1530h Samsung 15GLsi 

4610h Samsung SyncMaster 21GLs 

4690h Samsung SyncMaster 20GLsi 

4D50h Samsung SyncMaster 15GLe 

4D51h Samsung SyncMaster 15GLi 

4D52h Samsung SyncMaster 15M 

4D70h Samsung SyncMaster 17GLi 

4D71h Samsung SyncMaster 17GLsi 

4D72h Samsung SyncMaster 6Ne 

-177-


4D73h Samsung 17GLi 

4D74h Samsung 17GLsi 

5450h Samsung SyncMaster 15Me 

6D20h Samsung SyncMaster 15GLe 

SeeAlso: #00136,#00168,#00170 




(Table 00170) 

Values for Samtron monitor EDID: 

1428h Samtron 428PT/PTL 

1528h Samtron SC-528TXL 

1529h Samtron SC-528UXL 

1530h Samtron SC-528MXLJ 

4690h Samtron SC-208DXL+ 

4D70h Samtron SC-728FXL 

4D71h Samtron SC-726GXL 

5451h Samtron SC-528MDL 

SeeAlso: #00136,#00169,#00171 

(Table 00171) 

Values for Tatung monitor EDID: 

1F65h Intelliscan TM651x series 15" 




434Dh Tatung CM-17MC 

4855h Tatung CM-14UH 

SeeAlso: #00136,#00170,#00172 

(Table 00172) 

Values for Royal Information Company monitor EDID: 

061Ch TRL/RIC DL-1564 

0622h TRL/RIC DH-1570 

SeeAlso: #00136,#00171,#00173 

(Table 00173) 

Values for ViewSonic monitor EDID: 

0C00h ViewSonic 17GS 

0C0Fh ViewSonic 17PS 

0C1Fh ViewSonic 17GA 

1600h ViewSonic 21PS-2 

2601h ViewSonic 15GS 

-178-


2600h ViewSonic 15GS-2 

3141h ViewSonic 14ES 






334Bh ViewSonic 17GS-2 

334Ch ViewSonic 17GS-2 

3351h ViewSonic PT810 

344Bh ViewSonic 17PS-2 

344Ch ViewSonic 17PS-2 

3451h ViewSonic PT810-2 

354Dh ViewSonic GT800 

354Eh ViewSonic GT800 

3550h ViewSonic GT800 

3644h ViewSonic 15GA 



364Ah ViewSonic PT770 

364Bh ViewSonic PT770 

364Ch ViewSonic PT770 

3744h ViewSonic 15G-2 



374Bh ViewSonic 17GA 

374Ch ViewSonic 17GA 

3844h ViewSonic 15ES-2 



384Ah ViewSonic 17EA 

384Bh ViewSonic 17EA 

384Ch ViewSonic 17EA 




394Ah ViewSonic 17GS-2 

394Bh ViewSonic 17GS-2 

394Ch ViewSonic 17GS-2 

424Ah ViewSonic GT770 

424Bh ViewSonic GT770 




-179-


424Ch ViewSonic GT770 

434Ah ViewSonic 17PS-2 

434Bh ViewSonic 17PS-2 

434Ch ViewSonic 17PS-2 


444Ah ViewSonic 17GA-2 

4637h ViewSonic 1769DC 

4745h ViewSonic G653 (VCDTS21444-2E) 

SeeAlso: #00136,#00172 

--------V-104F15BL02------------------------- 

INT 10 - VESA VBE/DC (Display Data Channel) - READ VDIF 

AX = 4F15h 

BL = 02h 

??? 


AH = status 


??? 

01h failed 


--------V-104F16----------------------------- 

INT 10 - VESA VBE/GC (Graphics System Configuration) - API 

AX = 4F16h 

BL = function 




--------V-104F17----------------------------- 

INT 10 - VESA VBE/AF (Accelerator Functions) - API 

AX = 4F17h 

BL = function 




AH = status 


01h failed 

02h hardware does not support function 

03h function not available in current video mode 

else reserved for future error codes 

other vary by function 




-180-




Notes: the accelerator function code should be given a 32-bit protected 

mode stack which has at least 1024 bytes available for use by the 

VBE/AF code 

when called, the I/O permission bitmap must allow access to any 

ports which VBE/AF may require for operation 

SeeAlso: AX=4F0Bh 

--------V-104F4D----------------------------- 

INT 10 - VESA - VIDEO CURSOR INTERFACE REQUEST 

AX = 4F4Dh 

BX = number of bytes available for VCI use 

DS:0000h -> buffer for VCI 

ES:DI -> VCI driver callback function 

Return: AL = 4Fh if supported 

AH = status 


BX = number of bytes used by VCI 

ES:DI -> VCI request handler 

01h failed 

Desc: allow the VESA BIOS Extensions to cooperate with a pointing-device 

(typically mouse) driver 


--------V-104F70----------------------------- 

INT 10 - Avance Logic - GET ADAPTER INFORMATION 

AX = 4F70h 

Return: AX = 004Fh if successful 

BL = board information (see #00174) 

BH = board type??? 

00h on ALG2101 

FFh otherwise 



Bitfields for Avance Logic board information: 


0-1 video RAM size 

00 256K 

01 512K 

10 1M 

11 2M 

2 ??? 

3 slot size??? 

=0 8-bit slot 

-181-




=1 16-bit slot 

4 unused 

5 set on ALG2228/AL2301 

6-7 unused 

--------V-104FDD----------------------------- 

INT 10 - ATI M64VBE.COM - GET RESIDENT SEGMENT 

AX = 4FDDh 

Return: AX = CS of resident code 

Program: M64VBE is a VESA VBE 2.0 driver TSR for ATI's Mach64 video chip 

SeeAlso: AX=4FFFh/BX=364Dh"M64VBE",INT 60"M64VBE" 

--------V-104FFF----------------------------- 

INT 10 - VESA SuperVGA BIOS - Everex - TURN VESA ON/OFF 

AX = 4FFFh 

DL = new state (00h off, 01h on) 

Return: AX = 0000h if successful 

--------V-104FFF----------------------------- 

INT 10 - Diamond Stealth 24 - SET/RESET DUAL DISPLAY MODE 

AX = 4FFFh 

BX = dual display mode 

00h reset 

01h set dual display, 32KB VGA test 

02h set dual display, 64KB VGA test 

Return: AX = 4F00h if successful 

BX = number of scanlines off screen for test mode 

--------V-104FFFBX364D----------------------- 

INT 10 - ATI M64VBE.COM - UNINSTALL 

AX = 4FFFh 

BX = 364Dh ('6M') 

CX = 5634h ('V4') 

Return: AX,DX,DS,ES destroyed 

Program: M64VBE is a VESA VBE 2.0 driver TSR for ATI's Mach64 video chip 

SeeAlso: AX=4FDDh"M64VBE",INT 60"M64VBE" 

--------U-1050------------------------------- 

INT 10 - SCROLOCK.COM - INSTALLATION CHECK 

AH = 50h 

Return: BX = 1954h if installed 

AL = 00h if inactive, nonzero if active 

Program: SCROLOCK is a utility supplied with System Enhancement Associates' 

ARC archiver 


--------J-105000----------------------------- 


-182-




INT 10 - VIDEO - AX PC - SET SCREEN COUNTRY CODE 

AX = 5000h 

BX = country code 

0001h USA (English), 0051h Japan 



01h bad country code 

02h other error 

Note: This function is called with BX=0051h by Japanese versions of 

MS-DOS/PC DOS/DR DOS IO.SYS/IBMBIO.COM at initialization time. 

SeeAlso: AX=5001h,INT 16/AX=5000h 

--------J-105001----------------------------- 

INT 10 - VIDEO - AX PC - GET SCREEN COUNTRY CODE 

AX = 5001h 



BX = country code 

02h error 

SeeAlso: AH=00h,AX=5000h,INT 16/AX=5001h,INT 21/AH=38h 

--------V-105049----------------------------- 

INT 10 - VIDEO - SCREENR v1.55+ - API 

AX = 5049h ('PI') 

BX = function 

0000h installation check 

0001h lock mode 

0002h unlock mode 

0003h lock palette 

0004h unlock palette 

Return: AX = 0000h if installed 

BX = TSR version (BH=major,BL=minor) 

CL = mode locking status 

00h mode not locked 

01h mode locked: INT 10/AH=00h disabled 

CH = palette locking status 

00h palette not locked 

01h palette locked, the following functions are disabled: 

AX=1000h, AX=1001h, AX=1002h, AX=1010h, AX=1012h 

Program: SCREENR is a TSR supplied with Patrick Ibbetson's SCREEN display 

utility. 

Index: installation check;SCREENR 

--------U-1051------------------------------- 


-183-




INT 10 - SCROLOCK.COM - ENABLE/DISABLE 

AH = 51h 

AL = state 

00h disable 

nonzero enable 


Program: SCROLOCK is a utility supplied with System Enhancement Associates' 

ARC file archiver 

SeeAlso: AH=50h"SCROLOCK" 

--------J-105100----------------------------- 

INT 10 - VIDEO - AX PC - REGISTER EXTERNAL CHARACTER 

AX = 5100h 

BH = character width in bits (10h) 

BL = character height (10h) 

DX = character code (DH = F0h-F3h, DL=40h-7Eh,80h-FCh) 

ES:BP -> character bitmap 

Return: AL = status (00h successful, 01h failed) 

SeeAlso: AX=5101h,INT 1F"SYSTEM DATA" 

--------J-105101----------------------------- 

INT 10 - VIDEO - AX PC - READ CHARACTER 

AX = 5101h 

BH = character width in bits 

BL = character height 

DX = character code (DH = 00h if 8-bit character) 

ES:BP -> buffer for character bitmap 

Return: AL = status (00h successful, 01h failed) 

SeeAlso: AH=09h,AX=5100h 

--------J-105200----------------------------- 

INT 10 - VIDEO - AX PC - SET VIRTUAL TEXT RAM BUFFER 

AX = 5200h 

BX = segment of buffer 



--------J-105201----------------------------- 

INT 10 - VIDEO - AX PC - GET VIRTUAL TEXT RAM BUFFER 

AX = 5201h 

Return: BX = segment of buffer or 0000h if failed 

SeeAlso: AX=8300h,AH=FEh 

----------1053------------------------------- 

INT 10 - Show Partner F/X v3.6 - START PRESENTATION 

AH = 53h 


-184-




DS:DX -> ASCIZ name of presentation file (no path, extension forced to 

.PR2) 

Return: ??? 


----------1055------------------------------- 

INT 10 - Show Partner F/X v3.6 - UNINSTALL 

AH = 55h 

Return: FXSHOW.EXE removed from memory 


--------V-105555----------------------------- 

INT 10 - VIDEO - ATI EGA/VGA Wonder Super Switch - INSTALLATION CHECK 

AX = 5555h 

Return: AX = AAAAh if installed 

BX:CX -> ??? routine in SMS.COM resident portion 

-> data area (see #00175) in VCONFIG 

Program: Super Switch (SMS.COM) is a video mode switch program supplied with 

ATI EGA Wonder. It also maps video mode 08h to 27h or 23h. 

SeeAlso: INT 10/AH=00h,INT 14/AX=AA01h,INT 2F/AX=6400h 

Index: screen saver;ATI Wonder SMS.COM 


Format of ATI Super Switch data area: 


00h DWORD original INT 09 vector 

04h DWORD original INT 10 vector 

08h DWORD original INT 1C vector 

0Ch WORD screen saver state, 0=off, 1=on 

0Eh WORD blanking interval in clock ticks 

----------105555BXAAAA----------------------- 

INT 10 - LIR - SET CONFIGURATION 

AX = 5555h 

BX = AAAAh 

CL = new configuration flags (see #04118) 

CH > 0 new video adapter configuration (see #04121) 

= 0 do not update video adapter configuration 

DL = new keyboard layout flags (see #04119) 

DH = new alphabet flags (see #04120) 

Return: AX = A55Ah if installed 

Program: LIR is a DOS/Windows 3.xx codepage support package develoved by 

LABAS u.a.b. It supports several screen and printer codepages as 

well as various keyboard layouts used in Lithuania. 

Download at: ftp://ftp.labas.com/pub/drivers/language/lir422.zip 

-185-


SeeAlso: AX=5555h/BX=BBBBh,INT 17/AX=5555h/BX=AAAAh 




Bitfields for LIR configuration flags: 


7 program is active 

6 ??? 

5-3 code page 

2 Lithuanian??? 

1 Russian??? 

0 enable beeps 


Bitfields for LIR keyboard layout flags: 


7-5 keyboard layout 

100 QWERTY 

010 Lithuanian AZERTY 

001 Lithuanian ergonomic FZVPUJ 


2 Lithuanian keyboard??? 

1 Russian keyboard??? 

0 ??? 

SeeAlso: #04118,#04120 

Bitfields for LIR Alphabet flags: 



2 Lithuanian alphabetic symbol table??? 

1 Russian alphabetic symbol table??? 

0 reserved (0) 

SeeAlso: #04118,#04119,#04121 

Bitfields for LIR video adapter configuration: 


7 Hercules Graphics Card (HGC) 


4 VGA 

3 MCGA 

2 EGA 

1 CGA 

0 reserved (0) 

-186-




Note: multiple bits may be set if more than one video adapter is installed 


----------105555BXBBBB----------------------- 

INT 10 - LIR - GET CONFIGURATION 

AX = 5555h 

BX = BBBBh 

Return: AX = magic signature A55Ah 

BX = version number (BH = major version, BL = minor version), 

e.g. BX = 0410h for LIR v4.10, or BX = 0422h for LIR v4.22) 

CL = configuration flags (see #04118) 

CH = video adapter configuration (see #04121) 

DL = keyboard layout flags(see #04119) 

DH = alphabet flags (see #04120) 

SeeAlso: AX=5555h/BX=AAAAh,INT 17/AX=5555h/BX=BBBBh 

--------V-105F00----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - RETURN CHIP INFORMATION 

AX = 5F00h 

Return: AL = 5Fh function supported 

BL = chip type (see #00176) 

BH = video memory size (see #00177) 

CX = miscellaneous information (see #00178) 



Bitfields for Chips&Technologies chip type: 


7-4 chip type 

0000: 82c451 

0001: 82c452 / 82c452A 

0010: 82c455 

0011: 82c453 

0100: 82c450 

0101: 82c456 

0110: 82c457 

0111: F65520 

1000: F65530 / F65525 

1001: F66510 

1010: ??? 

1011: F64300 "Wingine DGX" 

1100: F65535/F65545 ??? 

1101: F65540 

1110: ??? 

-187-


1111: ??? 

3-0 revision number 





(Table 00177) 

Values for Chips&Technologies video memory size: 

00h 256KB 

01h 512KB 

02h 1MB 

03h 2MB 


Bitfields for Chips&Technologies miscellaneous information: 


0 DAC size (0=6-bit, 1=8-bit) 

1 system type (0=PC/AT, 1=PS/2) 

2 extended text modes supported by BIOS 

3 reserved 

4 extended graphics modes supported by BIOS 

5 reserved 

6 BIOS supports graphics cursor 

7 BIOS supports anti-aliased font 

8 BIOS supports pre-programmed emulation 

9 BIOS supports auto emulation 

10 BIOS supports variable mode set at cold boot 

11 BIOS supports variable mode set on warm boot 

12 BIOS supports emulation mode set at cold boot 

13 BIOS supports emulation mode set on warm boot 


--------V-105F00----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - RETURN CHIP VERSION 

AX = 5F00h 

Return: AH = 00h, if successful 

AL = chip version (the same value that VTEST.EXE reads) 

00h RTG3103??? 

01h RTG31030/RTG3105 

02h RTG3106??? 

3Fh non-Realtek chip 

BUG: in v3.C10, AX=5F00h on return due to improper stack restoration code 

SeeAlso: AX=5F01h"RTVGA" 

--------V-105F01----------------------------- 

-188-




INT 10 - Chips & Technologies Extended BIOS - SET PREPROGRAMMED EMULATION 

AX = 5F01h 

BL = emulation type (see #00179) 


AH = status 

00h unsuccessful 


SeeAlso: AX=5F00h,AX=5F02h,AH=FFh"Oak" 


(Table 00179) 

Values for Chips&Technologies emulation type: 

00h,01h reserved 

02h CGA 

03h MDA 

04h Hercules 

05h EGA 

06h VGA (disable emulation) 

--------V-105F01----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - WRITE RTVGA BIOS STRING TO DESTINATION 

AX = 5F01h 

ES:DI -> zero-filled buffer for BIOS ID string 

Return: AH = 00h if successful 

ES:DI -> ASCII signature "REALTEK VGA BIOS Version 3C.10" 


SeeAlso: AX=5F00h"RTVGA",AX=5F02h"RTVGA" 

--------V-105F02----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - AUTO EMULATION CONTROL 

AX = 5F02h 

BL = new state of autmatic emulation (00h enabled, 01h disabled) 


AH = status 




--------V-105F02----------------------------- 

INT 10 - Chips & Technologies '64300' BIOS - SET CLOCK 

AX = 5F02h 

BH = what to set 

02h dot clock 

BL = speed in MHz (12-99) 

03h memory clock 

-189-




BL = speed in MHz (12-99) 

FFh default dot and memory clocks 


AH = status 



SeeAlso: AX=5F00h"Chips",AX=5F03h"64300",AX=5F02h"65530" 

--------V-105F02----------------------------- 

INT 10 - Chips & Technologies '65530' BIOS - SET CLOCK 

AX = 5F02h 

BH = what to set 

02h dot clock 

BL = new clock speed (see #00180) 

03h memory clock 

BL = new clock speed (see #00180) 

04h set power-down register 

BL = new value for power-down register (bits 3-0 only) 

06h (404 clock chip) set control register 

BL = new vlaue for control register (bits 5-0 only) 

06h (404A/B/B-ES clock chips) set control register PWRDN1 

BL = new value for control register 

07h (404A/B/B-ES clock chips) set control register PWRDN1 

BL = new value for control register 

FFh default dot and memory clocks 


AH = status 



SeeAlso: AX=5F01h,AX=5F02h"64300",AX=5FA0h,#00184 


(Table 00180) 

Values for C&T '65530' BIOS clock speed: 

00h 12 MHz 

01h 14 MHz 

02h 16 MHz 

03h 18 MHz 

04h 20 MHz 

05h 25 MHz 

06h 28 MHz 

07h 32 MHz 

08h 36 MHz 

-190-




09h 40 MHz 

0Ah 45 MHz 

0Bh 50 MHz 

0Ch 56 MHz 

0Dh 60 MHz 

0Eh 65 MHz 

0Fh 66 MHz 

15h 34 MHz 

--------V-105F02----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - RETURN RTVGA ON-BOARD MEMORY SIZE 

AX = 5F02h 

Return: AH = 00h, if successful 

AL = on-board memory size 

(00h = 256K, 01h = 512K, 02h = 768K, 03h = 1024K) 


SeeAlso: AX=5F01h"RTVGA",AX=5F03h"RTVGA" 

--------V-105F03----------------------------- 

INT 10 - VIDEO - Realtek RTVGA - SET ??? 

AX = 5F03h 

BL = 0-3 (???) 

Return: AH = 00h if successful 


SeeAlso: AX=5F02h"RTVGA" 

--------V-105F03BL00------------------------- 

INT 10 - Chips & Technologies Extended BIOS - SET POWER-ON DISPLAY MODE 

AX = 5F03h 

BL = 00h 

CL = display mode 

CH = mode (see #00181) 


AH = status 



SeeAlso: AX=5F02h,AX=5F03h/BL=01h"Chips",AX=5F90h 


Bitfields for Chips&Technologies display mode: 


1-0 scanlines (00 = 200, 01 = 350, 10 = 400) 

7 persistence (0 reset on next boot, 1 until changed) 

--------V-105F03BH00------------------------- 

INT 10 - Chips & Technologies '64300' BIOS - GET CLOCK SPEED 

-191-




AX = 5F03h 

BH = 00h (get default memory clock) 


AH = status 



BL = clock speed in MHz 

SeeAlso: AX=5F02h"64300",AX=5F04h"64300" 

--------V-105F03BL01------------------------- 

INT 10 - Chips & Technologies Extended BIOS - SET POWER-ON EMULATION MODE 

AX = 5F03h 

BL = 01h 

CL = emulation mode (see #00181) 

CH = permanence 

bit 7 persistence (0 reset on next boot, 1 until changed) 


AH = status 



SeeAlso: AX=5F02h,AX=5F03h/BL=00h"Chips",AX=5F90h 

--------V-105F04----------------------------- 

INT 10 - Chips & Technologies '64300' BIOS - GET REFRESH RATE 

AX = 5F04h 

BL = video mode number 


AH = status 



BH = available refresh rates (see #00182) 

BL = currently-set refresh rate (see #00182) 

SeeAlso: AX=5F03h"64300",AX=5F05h"64300" 


Bitfields for C&T 64300 refresh rates: 


5 75 Hz 

4 72 Hz 

3 70 Hz 

2 60 Hz 

1 56 Hz 

0 interlaced 

--------V-105F05----------------------------- 

-192-


INT 10 - Chips & Technologies '64300' BIOS - SET REFRESH RATE 

AX = 5F05h 

BL = video mode number 

BH = refresh rate to set (see #00182) 

bit 7: =0 program new clock and CRT parametes 

=1 keep current parameters 


AH = status 



SeeAlso: AX=5F04h"64300" 

--------V-105F06----------------------------- 

INT 10 - Chips & Technologies '64300' BIOS - GET XRAM INFORMATION 

AX = 5F06h 


AH = status 



BL = XRAM presence (00h no XRAM, 01h present) 


--------V-105F08----------------------------- 

INT 10 - Chips & Technologies '64300' BIOS - SET LINEAR MEMORY START ADDRESS 

AX = 5F08h 

BX = desired start address in megabytes 


AH = status 




--------V-105F10----------------------------- 

INT 10 - Chips & Technologies '64300'/'65530' BIOS - GET LINEAR MEMORY INFO 

AX = 5F10h 


AH = status 



BX:CX = linear memory base address 

DX = virtual screen width offset (bytes) 

SI;DI = linear memory size 

SeeAlso: AX=5F08h,AX=5FA0h 

--------V-105F50----------------------------- 




-193-




INT 10 - Chips & Technologies Extended BIOS - GET LAPTOP DISPLAY STATUS 

AX = 5F50h 

Return: DL = display status (see #00183) 

Note: this call can be used on Toshiba laptops since ~1995 instead of 

INT 42/AX=7503h which is no longer supported with the F655xx chips 

SeeAlso: INT 42/AX=7503h 


Bitfields for display status: 


7-4 always 0 ??? 

3 1: both displays active (bit 1 also set) 

2 1: normal (monochrome display only), 0: inverse or color 

1 1: internal display active, 0: external only 

0 always set ??? 

--------V-105F50----------------------------- 

INT 10 - Chips & Technologies '65530' BIOS - GET 655xx INFORMATION 

AX = 5F50h 


AH = status 



BX = width of flat panel in pixels 

CX = height of flat panel in pixels 

DX = F65520/525/530 status (see #00184) 

SeeAlso: AX=5F51h,INT 15/AX=5F31h 

Bitfields for C&T F65520/525/530 status: 


15-0 reserved 

6-5 type of clock chip 

00 = 404 

01 = 404A 

10 = 404B ES 

11 = 404B 

4 accelerator enabled 

3 both displays active 

2 video polarity (1 = inverted) 

1 output device 

0 CRT 

1 flat panel (LCD) 

0 reserved 

-194-




--------V-105F51----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - SWITCH DISPLAY DEVICE 

AX = 5F51h 

BL = new active display 

00h CRT 

01h flat panel (LCD) 

02h both simultaneously 

BH = 01h to allow reprogramming the DAC 


AH = status 




--------V-105F53----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - EN/DISABLE ACCELERATOR SUPPORT 

AX = 5F53h 

BL = new support state 

00h disable buffer/accelerator 

01h enable buffer/acelerator 


AH = status 




--------V-105F54----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - TURN FLAT PANEL ON/OFF 

AX = 5F54h 

BL = new state 

00h on 

01h off 


AH = status 



SeeAlso: AX=5F50h,AX=5F51h,AX=5F53h,AX=5F5Ah 

--------V-105F5A----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - SET FLAT-PANEL VIDEO POLARITY 

AX = 5F5Ah 

BL = new video polarity 

00h normal 

01h inverted 


-195-





AH = status 




--------V-105F5C----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - SET VERTICAL COMPENSATION 

AX = 5F5Ch 

BL = type of vertical compensation to use 

00h no compensation 

01h automatic centering 

02h set centering register 

DX = centering value (bits 9-0 only) 

03h non-automatic centering 

04h set vertical line insertion register 

DL = vertical line insertion (bits 3-0 only) 

05h set alternate maximum scanline register 

DL = alternate maximum scanline (bits 4-0 only) 

06h enable text stretching, type 0 




0Ah disable text stretching 

0Bh set vertical line replication register 

DL = vertical line replication (bits 3-0 only) 

0Ch enable graphics stretching, type 0 

0Dh enable graphics stretching, type 1 

0Eh disable vertical graphics stretching 

0Fh disable all horizontal and vertical compensation 

10h enable optimal compensation 

11h disable optimal compensation 


AH = status 



SeeAlso: AX=5F50h,AX=5F5Eh,AX=5F5Fh 

--------V-105F5E----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - EN/DISABLE TALL FONT LOADING 

AX = 5F5Eh 

BL = new state of tall-font loading 

00h enable loading of 8x19/30/32 fonts 


-196-




01h disable loading of 8x19/30/32 fonts 


AH = status 



Note: when tall fonts are enabled, the fonts are stretched by duplicating 

scan lines as appropriate to convert an 8x16 font to the proper 

height (scan lines 1/9/12 [8x19] or 2-15 [8x30] or all [8x32]) 

SeeAlso: AX=5F5Ch,AX=5F5Fh 

--------V-105F5F----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - HORIZONTAL COMPENSATION 

AX = 5F5Fh 

BL = horizontal compensation type 

00h none 

01h automatic centering 

02h set centering register 

DL = centering value 

03h non-automatic centering 

04h enable text compression (force 8xN fonts) 

05h disable text compression (allow 9xN fonts) 

06h enable auto doubling 

07h disable auto doubling 

0Fh disable all horizontal and vertical compensation 


AH = status 



SeeAlso: AX=5F50h,AX=5FA0h 

--------V-105F90----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - GET SUPERVGA STATE BUFFER SIZE 

AX = 5F90h 

CX = state mask (see #00185) 


BX = number of 64-byte blocks required 

SeeAlso: AH=1Ch,AX=5F03h,AX=5F91h,AX=5F92h,AX=5FA0h 


Bitfields for Chips&Technologies state mask: 


0 video hardware 

1 BIOS data state 

2 DAC state 

-197-




15 type (0 all state info, 1 SuperVGA state only) 

--------V-105F91----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - SAVE SUPERVGA STATE 

AX = 5F91h 


ES:BX -> save buffer 


buffer at ES:BX filled 


--------V-105F92----------------------------- 

INT 10 - Chips & Technologies Extended BIOS - RESTORE SUPERVGA STATE 

AX = 5F92h 


ES:BX -> previously-filled save buffer 



--------V-105FA0----------------------------- 

INT 10 - Chips & Technologies Wingine DGX - GET EXTENDED BIOS SAVE BUFFER SIZE 

AX = 5FA0h 

CX = state(s) to be saved (see #00186) 


AH = status 



BX = number of 64-byte blocks required for state 

SeeAlso: AH=1Ch,AX=5FA1h,AX=5FA2h,AX=5F90h,AX=4F04h 


Bitfields for C&T BIOS save/restore state type: 


0 video hardware 

1 BIOS data 

2 DAC and color registers 

14 (65530 BIOS with AL=A1h only) clear emulation state 

15 extended registers 

SeeAlso: #00048,#00085 

--------V-105FA1----------------------------- 

INT 10 - Chips & Technologies Wingine DGX - SAVE VIDEO STATE 

AX = 5FA1h 

CX = state(s) to be saved (see #00186) 

ES:BX -> buffer for state information 


-198-




AH = status 



ES:BX buffer filled 

SeeAlso: AH=1Ch,AX=5FA0h,AX=5FA2h,AX=5F91h 

--------V-105FA2----------------------------- 

INT 10 - Chips & Technologies Wingine DGX - RESTORE VIDEO STATE 

AX = 5FA2h 

CX = state(s) to be restored (see #00186) 

ES:BX -> buffer containing previously-saved state information 


AH = status 



SeeAlso: AH=1Ch,AX=5FA0h,AX=5FA1h,AX=5F92h 

--------V-1060------------------------------------ 

INT 10 - HUNTER 16 - SET GRAPHICS FONT 

AH = 60h 

AL = new font 

bit 7 output characters in reverse video 

bits 0-6 font number (see #00200 at AH=77h) 

Return: BH = cell width 

BL = cell height 

Desc: select the font to use for output in mode 6; this can be used to mix 

fonts on the screen 

Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family 


SeeAlso: AH=04h"HUNTER",AH=73h"HUNTER",AH=77h"HUNTER" 

--------V-1061------------------------------------ 

INT 10 - HUNTER 16 - MOVE CURSOR TO GRAPHICS CO-ORDINATES 

AH = 61h 

CX = column 

DX = row 


Note: this function is only valid in graphics modes 


--------V-1062------------------------------------ 

INT 10 - HUNTER 16 - GET CURSOR POSITION IN GRAPHICS CO-ORDINATES 

AH = 62h 

Return: CX = column 

DX = row 


-199-




Note: this function is only valid in graphics modes 


--------V-1063------------------------------------ 

INT 10 - HUNTER 16 - SET CONTRAST 

AH = 63h 

AL = contrast (0..127) 


Desc: set the LCD screen contrast to improve visibility 


--------V-1064------------------------------------ 

INT 10 - HUNTER 16 - SET BACKLIGHT LEVEL 

AH = 64h 

AL = level (0..15) 


Desc: set the LCD backlight level to improve visibility in bad lighting 

SeeAlso: AH=63h,AH=65h,AH=74h,AH=78h"HUNTER",INT 15/AH=74h 

--------V-106500---------------------------------- 

INT 10 - HUNTER 16 - GET BACKLIGHT TIMEOUT 

AX = 6500h 

Return: BX = timeout in seconds (0-300) 

Desc: returns the time after which the backlight will turn off 

SeeAlso: AH=63h,AH=64h,AX=6501h,INT 15/AH=74h 

--------V-106501---------------------------------- 

INT 10 - HUNTER 16 - SET BACKLIGHT TIMEOUT 

AX = 6501h 

BX = timeout in seconds (0-300) 


Desc: set the idle time after which the backlight will turn off 

SeeAlso: AH=64h,AX=6500h 

--------V-1066------------------------------------ 

INT 10 - HUNTER 16 - SPLIT DISPLAY 

AH = 66h 

AL = control bits (see #00187) 

BH = top row of lower section of LCD (0..7) 

BL = top row of lower section of the virtual screen (0..24) 


Desc: split the LCD screen horizontally into two parts; each part may be 

individually scrollable or fixed. 

Note: the Hunter 16 has a 240x64 LCD display which serves as a window into 

a 640x200 virtual screen 


-200-




Bitfields for HUNTER 16 control bits: 


0-1 01: no split, 10: allow split 

2 allow scrolling the upper part 

3 allow scrolling the lower part 

--------V-106A00BX0000----------------------- 

INT 10 - Direct Graphics Interface Standard (DGIS) - INQUIRE AVAILABLE DEVICES 

AX = 6A00h 

BX = 0000h 

CX = 0000h 

DX = buffer length (may be 0) 

ES:DI -> buffer 

Return: BX = number of bytes stored in buffer 

CX = bytes required for all descriptions (0 if no DGIS) 

Note: buffer contains descriptions and addresses of DGIS-compatible 

display(s) and printer(s) 

SeeAlso: AX=6A02h 

--------V-106A01CX0000----------------------- 

INT 10 - Direct Graphics Interface Standard (DGIS) - REDIRECT CHARACTER OUTPUT 

AX = 6A01h 

CX = 0000h 

ES:DI = address of device to send INT 10 output to 

Return: CX = 0000h output could not be redirected 

else INT 10h output now routed to requested display 

SeeAlso: AX=6A02h 

--------V-106A02----------------------------- 

INT 10 - DGIS - INQUIRE INT 10 OUTPUT DEVICE 

AX = 6A02h 

ES:DI = 0000h:0000h 

Return: ES:DI = 0000h:0000h if current display is non-DGIS 

else address of the current DGIS INT 10 display 

SeeAlso: AX=6A00h,AX=6A01h 

--------V-106D74----------------------------- 

INT 10 - MTRFONTS - INSTALLATION CHECK 

AX = 6D74h ('mt') 

DS:0104h = signature "MtRfOnTs" 

Return: AX = 4D54h ('MT') if installed 

ES = PSP segment of resident code 

Program: MTRFONTS is a shareware TSR (part of the MTR package) by Mechon Mamre 

which provides Hebrew screen fonts 

SeeAlso: INT 16/AX=6D74h"MTRTSR" 


-201-




--------V-106E00----------------------------- 

INT 10 - Paradise VGA internal - GET ??? 

AX = 6E00h 

Return: BX = 5744h ('WD') if supported 

DH:AH:AL = last three ASCII digits of ROM serial number 

CL = ??? 

CH = ??? 


--------V-106E04----------------------------- 

INT 10 - Paradise VGA internal - GET SCREEN SIZE AND ??? 

AX = 6E04h 

Return: BX = screen width (columns) 

CX = screen height (lines) 

AH = ??? (05h or FFh) 

AL = ??? (04h or video mode) 


--------V-106E05----------------------------- 

INT 10 - Paradise VGA internal - SET MODE 

AX = 6E05h 

BL = mode 


Note: like AH=00h, AL=BL. 

SeeAlso: AH=00h,AX=6E00h,AX=6E04h,AX=6F05h 

--------V-106F00----------------------------- 

INT 10 - HP Vectra EX-BIOS - INSTALLATION CHECK 

AX = 6F00h 

BX 4850h (usually set to 0000h for simplicity) 

Return: BX = 4850h ('HP') indicates HP Extended BIOS video functions present 

AX destroyed 

SeeAlso: AX=6F00h"Video7",AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,AX=6F05h 

SeeAlso: INT 14/AX=6F00h,INT 16/AX=6F00h,INT 17/AX=6F00h,INT 33/AX=6F00h 

--------V-106F00BX0000----------------------- 

INT 10 - VIDEO - Video7 VGA,VEGA VGA - INSTALLATION CHECK 

AX = 6F00h 

BX = 0000h 

Return: BX = 5637h ('V7') indicates Video7 VGA/VEGA VGA extensions are present 

SeeAlso: AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,AX=6F05h 

--------V-106F01----------------------------- 

INT 10 - VIDEO - Video7 VGA,VEGA VGA,HP EX-BIOS - GET MONITOR INFO 

AX = 6F01h 

Return: AL = monitor type code (HP,VEGA VGA only) (see #00188) 


-202-




AH = status register information (see #00189) 

CL = current value of Extended Control register (HP Ext BIOS, and only 

if AL=41h) (see #00190) 

Notes: bits 0-3 are the same as the EGA/VGA status register bits 0-3 

supported by original HP Vectra AT and by ES/QS/RS series Vectras 


(Table 00188) 

Values for monitor type code (HP Extended BIOS): 

00h non-HP card with ROM and possibly its own INT 10h driver 

41h MultiMode video display adapter 

42h-44h reserved 

45h industry standard monochrome display adapter 

46h industry standard color display adapter 

51h reserved 

Bitfields for status register information: 


0 display enable 

0 = display enabled 

1 = vertical or horizontal retrace in progress 

1 light pen flip flop set 

2 light pen switch activated 

3 vertical sync 

4 monitor resolution 

0 = high resolution (>200 lines) 

1 = low resolution (


0 screen resolution (0 = 200 lines, 1 = 400 lines) 

1 underline enable (if set, 'blue' of fg color = underline) 

2 font (0 = Standard-8, 1 = HP-Roman-8) 

3 memory disabled for CPU access 

4 allow access to full 32K memory instead of wrapping at 16K 

5 select second 16K page instead of first 

6,7 unused 

--------V-106F03----------------------------- 

INT 10 - HP Vectra EX-BIOS - MODIFY MONITOR INFO 

AX = 6F03h 

BH = exclude mask (set bits are not modified) 

BL = new values for bits indicated by BH (see #00190) 

Return: AX destroyed 

Notes: 

this function is only valid when an HP MultiMode Video Display Adapter 

is installed 

supported by original HP Vectra AT and by ES/QS/RS series Vectras 


--------V-106F04----------------------------- 

INT 10 - VIDEO - Video7 VGA,VEGA VGA,HP Vectra - GET MODE AND SCREEN RESOLUTION 

AX = 6F04h 

Return: AL = current video mode (see #00191) 

BX = horizontal columns (text) or pixels (graphics) 

CX = vertical columns (text) or pixels (graphics) 


--------V-106F05----------------------------- 

INT 10 - VIDEO - Video7 VGA,VEGA EXTENDED EGA/VGA,HP Vectra - SET VIDEO MODE 

AX = 6F05h 

BL = mode (see #00191) 

Return: AX,BL destroyed 

Notes: also supported by the HP Vectra Extended BIOS on the original 

HP Vectra AT and by ES/QS/RS series Vectras 

on the HP Vectra, this function rather than AH=00h must be used to 

return to an IBM-standard mode after setting an HP-specified mode 

from 08h to 0Fh. 

SeeAlso: AH=00h,AX=0070h,AX=007Eh,AX=6F04h 




(Table 00191) 

Values for Video7/VEGA video mode: 

text/ text pixel pixel colors disply scrn system 


00h-13h = standard IBM modes (see #00010 at AH=00h) 

-204-


08h = T 80x27 . . mono . . HP MultiMode Video 


09h = T 80x27 . . . . . HP MultiMode Video 

0Ah = T 40x27 . . mono . . HP MultiMode Video 

0Bh = T 40x27 . . . . . HP MultiMode Video 

0Ch = reserved HP MultiMode Video 

0Dh = G . . 640x400 . . . HP MultiMode Video 

0Eh = G . . 320x400 . . . HP MultiMode Video 

0Fh = G . . 320x400 . . . HP MultiMode Video 

40h = T 80x43 8x8 . . . . Video7/VEGA VGA 






60h = G . . 752x410 16 . . Video7 VGA, VEGA VGA 

61h = G . . 720x540 16 . . Video7 VGA, VEGA VGA 

= G . . 720x540 16 . . Northgate, Headland 1024i 

62h = G . . 800x600 16 . . Video7 VGA, VEGA Ext EGA 

= G . . 800x600 16 . . Headland 1024i 

63h = G . . 1024x768 2 . . Video7 VGA 

64h = G . . 1024x768 4 . . Video7 VGA 

65h = G . . 1024x768 16 . . Video7 VGA, VEGA Ext EGA 

= G . . 1024x768 16 . . Headland 1024i 

66h = G . . 640x400 256 . . Video7 VGA, VEGA Ext VGA 

= G . . 640x400 256 . . Northgate, Headland 1024i 


= G . . 640x480 256 . . Headland 1024i 


= G . . 720x540 256 . . Headland 1024i 


= G . . 800x600 256 . . Headland 1024i 

70h = G . . 752x410 16gray . . Video7 VGA, VEGA VGA 

71h = G . . 720x540 16gray . . Video7 VGA, VEGA VGA 

72h = G . . 800x600 16gray . . Video7 VGA 







79h = G . . 800x600 256gray . . (future) 



-205-




SeeAlso: AH=00h,#00010,AX=0070h,#00011,AX=007Eh,AX=6F04h,#00083 

Index: video modes;Video 7|video modes;VEGA|video modes;Headland 

--------V-106F06----------------------------- 

INT 10 - VIDEO - Video7 VGA,VEGA VGA - SELECT AUTOSWITCH MODE 

AX = 6F06h 

BL = Autoswitch mode select 

00h select EGA/VGA-only modes 

01h select Autoswitched VGA/EGA/CGA/MGA modes 

02h select 'bootup' CGA/MGA modes 

BH = enable/disable (00h enable, 01h = disable selection) 


--------V-106F07----------------------------- 

INT 10 - VIDEO - Video7 VGA,VEGA VGA - GET VIDEO MEMORY CONFIGURATION 

AX = 6F07h 

Return: AL = 6Fh 

AH = memory configuration 

bits 0-6 = number of 256K blocks of video memory 

bit 7 = DRAM/VRAM (0: DRAM, 1: VRAM) 

BH = chip revision (SR8F) (S/C Chip in VEGA VGA) 

BL = chip revision (SR8E) (G/A Chip in VEGA VGA) 

CX = 0000h 

SeeAlso: AH=12h/BL=10h 

--------V-1070------------------------------- 

INT 10 - VIDEO - TANDY 2000 only - GET ADDRESS OF VIDEO RAM 

AH = 70h 

Return: AX:BX -> WORD containing green plane's offset 

AX:CX -> WORD containing green plane's segment 

AX:DX -> WORD containing segment of red (offset 0) and blue (offset 

4000) planes 


--------V-1070------------------------------------ 

INT 10 - HUNTER 16 - DRAW ELLIPSE/CIRCLE 

AH = 70h 

DS:BX -> control block (see #00192) 


Desc: Draws a circle or ellipse. Only valid in graphics modes. 

Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family 




Format of HUNTER 16 control block: 

-206-



00h WORD center X co-ordinate 

02h BYTE center Y co-ordinate 

03h WORD radius in pixels 

05h BYTE color (00h white, 01h black, FFh invert) 

06h BYTE aspect ratio x:x (1-127) 

07h BYTE aspect ratio y:y (1-127) 

--------V-107000BX0000----------------------- 

INT 10 - Everex Extended Video BIOS - RETURN EMULATION STATUS 

AX = 7000h 

BX = 0000h 

Return: AL = 70h if Trident-based Everex card 

CL = monitor type (see #00193) 

CH = feature bits (see #00194) 

DX = video board info 

bits 4-15: board ID model (see #00195) 

bits 0-3: board ID revision 

DI = BCD BIOS version number 

SeeAlso: AX=5F01h,AH=FFh"Oak" 




(Table 00193) 

Values for Everex monitor type: 

00h mono 

01h CGA 

02h EGA 

03h digital multifrequency 

04h IBM PS/2 

05h IBM 8514 

06h SuperVGA 

07h analog multifrequency 

08h super multifrequency 

Bitfields for Everex feature bits: 


7-6 memory size 

00 = 256K 

01 = 512K 

10 = 1024K 

11 = 2048K 

5 special oscillator present 

4 VGA protect enabled 

-207-


0 6845 emulation 




(Table 00195) 

Values for board model for Trident-based Everex cards: 

0236h Ultragraphics II 

0620h Vision VGA 

0673h EVGA 

0678h Viewpoint 

--------V-107000BX0004----------------------- 

INT 10 - Everex Extended Video BIOS - GET PAGING FUNCTION POINTER FOR CURR MODE 

AX = 7000h 

BX = 0004h 

Return: ES:DI -> FAR paging function (call with DL = page to set) 

Note: the word preceding ES:DI is the length of the function in bytes, and 

the last byte of the function is a FAR return instruction. 

SeeAlso: AX=4F05h,AX=7000h/BX=0000h,AX=7000h/BX=0005h 

--------V-107000BX0005----------------------- 

INT 10 - Everex Extended Video BIOS - GET SUPPORTED MODE INFO 

AX = 7000h 

BX = 0005h 

CL = maximum number of modes to get info for 

CH = mode type to get info for (see #00196) 

DL = monitor type to get info for 

ES:DI -> buffer for mode info (see #00197) 

Return: CL = total number of modes fitting criteria 

CH = size of each info record 

SeeAlso: AX=7000h/BX=0000h,AX=7000h/BX=0004h 

(Table 00196) 

Values for Everex mode type: 

00h all modes 

01h monochrome text modes 

02h color text modes 

03h four-color CGA graphics modes 

04h two-color CGA graphics modes 

05h 16-color graphics modes 

06h 256-color graphics modes 

Format of Everex mode information record: 


00h BYTE mode number (bit 7 set if extended mode) 

-208-


01h BYTE mode type (see #00196) 

02h BYTE info bits (see #00198) 

03h BYTE font height 

04h BYTE text columns on screen 

05h BYTE text rows on screen 

06h WORD number of scan lines 

08h BYTE color information 

bits 7-4 reserved 

3-0 bits per pixel 




Bitfields for Everex info bits: 


7,6 reserved 

5 monochrome mode 

4 interlaced display 

3 requires special oscillator 

2,1 memory required (00 = 256K, 01 = 512K, 10 = 1024K, 11 = 2048K) 

0 reserved 

--------V-1071------------------------------- 

INT 10 - VIDEO - TANDY 2000 only - GET ADDRESS OF INCRAM 

AH = 71h 

Return: AX:BX -> WORD containing segment address of INCRAM 

AX:CX -> WORD containing offset of INCRAM 

SeeAlso: AH=70h"TANDY" 

--------V-1071------------------------------------ 

INT 10 - HUNTER 16 - DRAW LINE/BOX 

AH = 71h 

DS:BX -> control block (see #00199) 


Desc: Draws a line or box. Only valid in graphics modes. 


Format of HUNTER 16 control block: 


00h WORD left edge X co-ordinate 

02h BYTE lower edge Y co-ordinate 

03h WORD right edge X co-ordinate 

05h BYTE upper edge Y co-ordinate 

06h BYTE color (00h white, 01h black, FFh invert) 

07h BYTE type (00h line, 01h box) 

08h BYTE if non-zero (and type is BOX) fill with color 

-209-




--------V-1072------------------------------- 

INT 10 - VIDEO - TANDY 2000 only - SCROLL RIGHT PART OR ALL OF SCREEN 

AH = 72h 

AL = number of columns to shift scroll area, 00h to clear entire area 

BH = new attributes for blanked columns at left 

CH,CL = row, column of upper left corner of scroll area 

DH,DL = row, column of lower right corner of scroll area 


SeeAlso: AH=06h,AH=07h,AH=73h"TANDY",INT 15/AH=12h/BH=05h 

--------V-1072------------------------------------ 

INT 10 - HUNTER 16 - SELECT TEXT-MODE INVERSE VIDEO MECHANISM 

AH = 72h 

AL = mechanism to use 

00h do not use inverse video 

01h emulate MDA. Display attribute 07h is normal video and 70h is 

inverse video. 

02h use inverse video if background is non-black. 

03h use inverse video for high intensity text. 

04h use inverse video for text with background intensity greater 

than foreground intensity. 

05h use inverse video for text with background color other than 

black or high intensity foreground. 


SeeAlso: AH=70h"HUNTER",AH=71h"HUNTER" 

--------V-1073------------------------------- 

INT 10 - VIDEO - TANDY 2000 only - SCROLL LEFT PART OR ALL OF SCREEN 

AH = 73h 

AL = number of columns to shift scroll area, 00h to clear entire area 

BH = new attributes for blanked columns at right 

CH,CL = row, column of upper left corner of scroll area 

DH,DL = row, column of lower right corner of scroll area 


SeeAlso: AH=06h,AH=07h,AH=72h"TANDY",INT 15/AH=12h/BH=05h 

--------V-1073------------------------------------ 

INT 10 - HUNTER 16 - SELECT TEXT FONT 

AH = 73h 

AL = new font 

00h 7x7 in a 8x8 cell 



Return: BH = cell width 


-210-




BL = cell height 


--------V-1074------------------------------------ 

INT 10 - HUNTER 16 - SET LCD WINDOWS POSITION 

AH = 74h 

DH = row (0..24) 

DL = column (0..79) 


Desc: set the position in the virtual screen being displayed in the LCD 

screen. If Split Screen (INT 10/AH=66h) is used, this call sets the 

position for the window which has the cursor. 

SeeAlso: AH=66h"HUNTER",AH=75h,AH=76h 

--------V-1075------------------------------------ 

INT 10 - HUNTER 16 - SET ZOOM 

AH = 75h 

AL = new Zoom state (00h off, nonzero on) 



--------V-1076------------------------------------ 

INT 10 - HUNTER 16 - LOOKING KEYS 

AH = 76h 

AL = action 

00h home the window 

01h move up one line 

02h move down one line 

03h move left one character 

04h move right one character 

05h flip window to other side of virtual screen 


Desc: moves the displayed screen around the virtual screen 


--------V-1077------------------------------------ 

INT 10 - HUNTER 16 - GET GRAPHICS FONT 

AH = 77h 

Return: AL = font number (see #00200) 



(Table 00200) 

Values for HUNTER 16 graphics font number: 



-211-







05h 14x18 in a 16x20 cell 


Note: size is X * Y 

--------V-1078------------------------------------ 

INT 10 - HUNTER 16 - TURN BACKLIGHT ON/OFF 

AH = 78h 

AL = new state of backlight (00h on, 01h off) 



--------V-107F------------------------------- 

INT 10 - Paradise SVGA - WD90C24 INSTALLATION CHECK 

AH = 7Fh 

Return: AX = 1234h if WD90C24 chip installed 

--------V-107F00----------------------------- 

INT 10 - SOLLEX SuperVGA - GET EXTENSIONS INFO 

AX = 7F00h 

Return: AL 7Fh if not supported 

AL = 7Fh if supported 

AH = status 


ES:DI -> info structure (see #00201) 

01h failed 

Program: the SOLLEX (Smos videO controLLer EXtensions) SuperVGA functions are 

an extension to the VESA SuperVGA BIOS Extensions (see AX=4F00h) by 

Seiko Epson Corporation intended to provided a standardized interface 

to SuperVGA functionality not addressed by the VESA standard 



Format of SOLLEX SuperVGA info structure: 


00h DWORD pointer to VESA function dispatch table 

04h DWORD pointer to SOLLEX function dispatch table 

08h DWORD pointer to VESA SuperVGA info (see #00077 at AX=4F00h) 

0Ch DWORD pointer to mode info structure table, consisting of 

alternating ResInfo (see #00202) and VESA mode information 

(see #00079 at AX=4F01h) blocks, terminated with an FFFFh word 

10h DWORD pointer to font info structure table (see #00203) 

14h WORD high resolution crystal frequency in Hz (0000h = not present) 

-212-



16h DWORD pointer to ASCIZ ID string 


1Ah DWORD pointer to timeout reset table 

array of bytes, each a multiple of the minimum time increment 

1Eh WORD minimum time increment in timer ticks 

20h BYTE inverse options supported 

bit 0: inverse supported 


21h BYTE normal color value 

22h BYTE inverse color value 

23h WORD port to be accessed for normal/inverse settings 

25h WORD type of interface chip (currently undefined) 

27h WORD program operational mode 

bits 1-0: 00 no preference 

01 terse (minimum detail in program messages) 

10 verbose 

11 use menus if supported, verbose mode otherwise 


29h WORD SOLLEX specification version 

2Bh WORD version of VESA/SOLLEX implementation 

2Dh DWORD offset to relocatable portion of SOLLEX extensions (for CONFIG) 

2Eh DWORD offset to unused section of the extensions ROM 


Note: all DWORD pointers initially require segment fixups; if the segment 

is 0000h, it should be changed to the returned ES, otherwise it 

may be assumed to be correct 


Format of SOLLEX SuperVGA ResInfo: 


00h WORD 16-bit mode number 

02h WORD adapter type (00h VGA, 01h EGA, 02h CGA, 03h MDA) 

04h WORD display info (see #00206) 

06h DWORD pointer to video parameter table 

0Ah BYTE replacement entry in master Video Parameter 

0Bh BYTE mode requested for mode set by BIOS 

0Ch DWORD pointer to LoadReg table 

10h BYTE index into table of clock values (see #00204) 


Format of SOLLEX SuperVGA font info table [array] entry: 


00h BYTE required font height 

-213-


01h BYTE parameter to load text mode font 

02h BYTE parameter to load graphics mode font 





(Table 00204) 

Values for SOLLEX SuperVGA clock value index: 

00h 25 MHz 

01h 28 MHz 

02h PCLK 

03h 31.5 MHz (VESA 640x480) 

04h reserved 

05h 16 MHz (EGA) 

06h PCLK 

07h 24 MHz (EGA) 

08h 25 MHz 

09h 28 MHz 

0Ah 36 MHz 

0Bh 45 MHz (for 1024x768) 

0Ch 80 MHz 

0Dh 40 MHz 

0Eh 65 MHz 

0Fh 1 MHz (for powerdown) 


--------V-107F00BX4000----------------------- 

INT 10 - Diamond Stealth 24 - GET S3 INFORMATION BLOCK 

AX = 7F00h 

BX = 4000h 

Return: AX = 007Fh if supported 

DX:BX -> DAC set mode routine 

SeeAlso: AX=7F00h/BX=4001h,AX=7F00h/BX=4002h,#00732 at INT 1A/AX=B102h 

--------V-107F00BX4001----------------------- 

INT 10 - Diamond Stealth 24 - GET LINEAR ADDRESS 

AX = 7F00h 

BX = 4001h 


CX = current linear address base (high word) 


--------V-107F00BX4002----------------------- 

INT 10 - Diamond Stealth 24 - SET LINEAR ADDRESS 

AX = 7F00h 

BX = 4002h 

-214-


CX = new linear address base (high word) 



--------V-107F01BL00------------------------- 

INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - SET ADAPTER 

AX = 7F01h 

BL = 00h 

CX = adapter request (see #00205) 



AH = status 


01h failed 

Note: initializes video hardware to a particular standard 

SeeAlso: AX=7F00h"SOLLEX",AX=7F01h/BL=01h,AX=7F01h/BL=02h 




Bitfields for SOLLEX SuperVGA adapter request: 


1-0 adapter type (00 VGA, 01 EGA, 10 CGA, 11 MDA) 

2 reserved 

4-3 change displays (00 none, 01 analog 10 digital 11 panel) 

6-5 desired monitor sense (01 color, 10 mono, 11=8514) 

7 lock override 

8 alternate adapter mode 

15-9 reserved 

--------V-107F01BL01------------------------- 

INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - GET ADAPTER 

AX = 7F01h 

BL = 01h 



AH = status 


01h failed 

BX = adapter type (see #00205) 

DX = display type (see #00206) 

SeeAlso: AX=7F00h"SOLLEX",AX=7F01h/BL=00h,AX=7F01h/BL=02h 

Bitfields for SOLLEX SuperVGA display type: 


15-9 reserved 

-215-




8 alternate display active 

7 Enhanced Color Display monitor active 

6 multi-frequency digital monitor active 

5 PS/2-type monitor active 

4 plasma/electroluminescent panel active 

3 LCD panel active 

2 multi-frequency analog monitor active 

1-0 monitor sense (00 none, 01 color, 10 mono, 11=8514) 

--------V-107F01BL02------------------------- 

INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - DETERMINE ADAPTER SUPPORT 

AX = 7F01h 

BL = 02h 

CX = adapter request (see #00205) 



AH = status 

00h requested setting can successfully be made 

01h requested setting not available in this configuration 

SeeAlso: AX=7F00h"SOLLEX",AX=7F01h/BL=00h 

--------V-107F02BL00------------------------- 

INT 10 - SOLLEX SuperVGA - DISPLAY OUTPUT CONTROL - SET DISPLAY OUTPUT 

AX = 7F02h 

BL = 00h 

CX = display output setting (see #00207) 



AH = status 


01h failed 



Bitfields for SOLLEX SuperVGA display output setting: 


0 CRTC control in 2,1 valid 

1 enable digital output 

2 enable analog output 

3 panel control in 5,4 valid 

4 enable LCD output 

5 enable plasma/EL output 

6 inverse control in 7 valid 

7 0=normal, 1=inverse 

-216-




15-8 reserved 

--------V-107F02BL01------------------------- 

INT 10 - SOLLEX SuperVGA - DISPLAY OUTPUT CONTROL - GET DISPLAY OUTPUT 

AX = 7F02h 

BL = 01h 



AH = status 


BX = display output setting (see #00207) 

CX = displays attached (see #00208) 

01h failed 



Bitfields for SOLLEX SuperVGA displays attached: 


0 PS/2 display on analog output 

1 multi-frequency monitor on analog output 

2 LCD panel attached 

3 plasma/electroluminescent panel attached 

4 multi-frequency monitor on digital output 

5 Enhanced Color Display attached to digital outpt 

6 alternate display 

15-7 reserved 

--------V-107F03BL00------------------------- 

INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - GET SUPPORT INFO 

AX = 7F03h 

BL = 00h 

CX = support type 

0000h VGA, 0001h EGA, 0002h CGA, 0003h MDA, 0004h extensions, 

0005h-0012h reserved for SOLLEX, 0013h Hercules, 

0014h-001Fh reserved for SOLLEX, 0020h-00FFh reserved for OEM 



AH = status 


CX = size of video support code 

DX = segment of physical video support (0000h if no ROM) 

ES = segment of active video support 

ES:DI -> information block (DI = 0000h if none available) 

01h failed 

-217-




SeeAlso: AX=7F03h/BL=01h 

--------V-107F03BL01------------------------- 

INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - INITIALIZE VIDEO SUPPORT 

AX = 7F03h 

BL = 01h 

CX = support request 

ES = segment of support code 



AH = status 


01h failed 

Note: initializes the indicated video support by calling ES:0003h; this 

function may be used to switch the active video support back to 

ROM after AX=7F03h/BL=02h 

SeeAlso: AX=7F03h/BL=00h 

--------V-107F03BL02------------------------- 

INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - GO RAM RESIDENT 

AX = 7F03h 

BL = 02h 

CX = support request 

ES = destination segment 



AH = status 


01h failed 


--------V-107F04BL00------------------------- 

INT 10 - SOLLEX SuperVGA - POWER CONTROL - SET POWER STATE 

AX = 7F04h 

BL = 00h 

CX = new power state 



AH = status 


01h failed 

Note: higher values progressively reduce the operations available on the 

video adapter while yielding increasing power savings 



-218-




--------V-107F04BL01------------------------- 

INT 10 - SOLLEX SuperVGA - POWER CONTROL - GET POWER STATE 

AX = 7F04h 

BL = 01h 



AH = status 


CX = current power state 

DX = maximum state 

01h failed 


--------V-107F04BL02------------------------- 

INT 10 - SOLLEX SuperVGA - POWER CONTROL - SET TIMEOUT RESET 

AX = 7F04h 

BL = 02h 

CX = timeout reset 



AH = status 


01h failed 


--------V-107F04BL03------------------------- 

INT 10 - SOLLEX SuperVGA - POWER CONTROL - GET TIMEOUT RESET 

AX = 7F04h 

BL = 03h 



AH = status 


BX = time increment 

CX = current timeout reset 

DX = maximum timeout reset 

ES:DI -> timeout reset table (array of bytes) 

01h failed 

Note: the timeout period is computed as (BYTE ES:[DI+CX]) * BX timer ticks 


--------V-107F05----------------------------- 

INT 10 - SOLLEX SuperVGA - LOAD REGISTER 

AX = 7F05h 


-219-


ES:DI -> register value table (see #00209) 



AH = status 


01h failed 

SeeAlso: AH=F1h,AH=F3h,AH=F5h 




Format of SOLLEX SuperVGA register value table: 


00h WORD base I/O register (FFFFh = end of list) 

02h 2N BYTEs pairs of values to be written to the base I/O register as an 

index value and the following register as a data byte 

2N+2 WORD FFFFh (end of data list) 

... (repeats until FFFFh base address) 

--------V-107F06----------------------------- 

INT 10 - SOLLEX SuperVGA - MULTIPLE FONT CONTROL 

AX = 7F06h 


00h set multiple font state 

CX = new state (00h off, 01h on) 

01h get multiple font state 

Return: BL = current state (00h off, 01h on) 



AH = status 


01h failed 


--------V-107F07----------------------------- 

INT 10 - SOLLEX SuperVGA - FILL VIDEO RAM 

AX = 7F07h 

BL = how much to fill 

00h regen size 

01h all video memory 

CX = pattern to write (normally 0720h for text modes and 0000h for gr) 



AH = status 


01h failed 

-220-





--------A-1080------------------------------- 

INT 10 - CU Writer v1.4 - GET OPTION 

AH = 80h 

AL = desired option 

Return: ??? 

Program: CU Writer is a public-domain Thai-English word processor from 

Chulalongkorn University, Bangkok 

SeeAlso: AH=81h"CU Writer" 

--------Q-1080--DX4456----------------------- 

INT 10 U - VIDEO - DESQview 2.0x only - internal - SET ??? HANDLER 

AH = 80h 

DX = 4456h ('DV') 

ES:DI -> FAR subroutine to be called on ??? 

Return: DS = segment of DESQview data structure for video buffer 

Note: this function is probably meant for internal use only, due to the magic 

value required in DX 

the subroutine seems to be called when the DESQview menu is accessed; 

on entry, AL = 03h or 04h 

--------A-1081------------------------------- 

INT 10 - CU Writer v1.4 - SET OPTION 

AH = 81h 

??? 

Return: ??? 

SeeAlso: AH=80h"CU Writer" 

--------Q-1081--DX4456----------------------- 

INT 10 U - VIDEO - DESQview 2.0x only - internal - GET ??? 

AH = 81h 

DX = 4456h ('DV') 

Return: ES = segment of DESQview data structure for video buffer 

BYTE ES:[0] = current window number in DV 2.0x 



SeeAlso: AH=82h"DESQview" 

--------Q-1082--DX4456----------------------- 

INT 10 U - VIDEO - DESQview 2.0x only - internal - GET CURRENT WINDOW INFO 

AH = 82h 

DX = 4456h ('DV') 

Return: DS = segment in DESQview for data structure 

in DV 2.00, 

BYTE DS:[0] = window number 


-221-




WORD DS:[1] = segment of other data structure 

WORD DS:[3] = segment of window's object handle 

ES = segment of DESQview data structure for video buffer 

AL = current window number 

AH = ??? 

BL = direct screen writes 

00h program does not do direct writes 

01h program does direct writes, so shadow buffer not usable 

BH = ??? 

CL = current video mode 

CH = ??? 



SeeAlso: AH=81h"DESQview" 

--------J-108200----------------------------- 

INT 10 - VIDEO - AX PC - GET/SET SCROLL MODE 

AX = 8200h 

BL = new scroll mode or FFh to get current mode 

00h dynamic, 01h software 

Return: AL = scroll mode (current mode if BL=FFh, previous mode otherwise) 


--------J-108300----------------------------- 

INT 10 - VIDEO - AX PC - GET VIDEO RAM ADDRESS 

AX = 8300h 

Return: AX = offset of video RAM 

ES:BX -> virtual text RAM buffer 


----------1086------------------------------- 

INT 10 - ??? 

AH = 86h 

Note: called by Diamond Stealth64 Video STLTH64.VXD 

SeeAlso: INT 2F/AX=4021h 

--------N-108B------------------------------- 

INT 10 - Alloy MW386 - FORCE WORKSTATION SCREEN UPDATE 

AH = 8Bh 



--------N-1090------------------------------- 

INT 10 - Alloy MW386 - GET PHYSICAL WORKSTATION DISPLAY MODE 

AH = 90h 

Return: AL = current video mode (see #00010 at AH=00h) 


-222-





--------N-1091------------------------------- 

INT 10 - Alloy MW386 - GET PHYSICAL WORKSTATION ADAPTER TYPE 

AH = 91h 

Return: AL = video adapter type (see #00210) 

Note: types less than 80h do not imply that the current user is on the host 



(Table 00210) 

Values for Alloy MW386 video adapter type: 

00h monochrome 

01h Hercules monochrome graphics 

02h CGA 

03h EGA 

04h VGA 

80h monochrome text terminal 

81h Hercules graphics terminal 

82h color graphics terminal 

--------N-1092------------------------------- 

INT 10 - Alloy MW386 - INHIBIT WORKSTATION SCREEN UPDATES 

AH = 92h 


Note: the terminal will be updated even when screen updates are inhibited if 

TTY output is used 

SeeAlso: AH=8Bh 

--------N-1093------------------------------- 

INT 10 - Alloy MW386 - REDRAW SCREEN 

AH = 93h 


SeeAlso: AH=8Bh,AH=FFh 

--------V-109508----------------------------- 

INT 10 - VHRBIOS.SYS - ??? 

AX = 9508h 

Return: ??? 

Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius" 

black&white A4/portrait monitor 

SeeAlso: AH=96h"VHRBIOS.SYS",AH=F0h"VHRBIOS.SYS" 

--------V-1096------------------------------- 

INT 10 - VHRBIOS.SYS - GET OTHER DISPLAY INFO 

AH = 96h 

Return: AL = display type (see AH=1Ah) 

-223-




AH = ??? (possibly related to Micro Channel support) 

Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius" 

black&white A4/portrait monitor 

Desc: returns info on any non-Genius video adapter in the system 

SeeAlso: AX=9508h"VHRBIOS.SYS",AH=F0h"VHRBIOS.SYS" 

--------A-10A0------------------------------- 

INT 10 - CU Writer v1.4 - SET PIXEL WRITE MODE 

AH = A0h 

??? 

Return: ??? 

Program: CU Writer is a public-domain Thai-English word processor from 

Chulalongkorn University, Bangkok 

SeeAlso: AH=80h"CU Writer",AH=B0h 

--------p-10A000----------------------------- 

INT 10 - ATI BIOS Extensions - ??? 

AX = A000h 

CL = ??? (bits 2-0 may not be 000) 

CH = ??? (81h or ???) 

DX = segment of ??? (if CH=81h) 

??? 


Program: the ATI BIOS extensions are supported by ATI graphics cards containing 

the Mach64 or newer graphics chips (Rage Pro, Rage 128, etc.) 

SeeAlso: AX=4F10h/BL=00h,AX=A001h 

----------10A001----------------------------- 

INT 10 - ATI Mach64 BIOS - ??? 

AX = A001h 

CL = ??? flags 

??? 

Return: AH = status 


01h failed 

??? 

SeeAlso: AX=A000h,AX=A002h 

----------10A002----------------------------- 


AX = A002h 

CL = ??? (bits 2-0 may not be 000) 

CH = ??? (81h or ???) 

DX = segment of ??? (if CH=81h) 

??? 


-224-






01h failed 

??? 

Note: executes AX=A000h, then AX=A001h if A000h was successful 


----------10A003----------------------------- 


AX = A003h 

BX = ??? 

??? 

Return: AH = status (00h successful) 

??? 


--------V-10A004----------------------------- 

INT 10 - PhoenixVIEW/LC - VIDEO DISPLAY TYPE 

AX = A004h 

??? 

Return: ??? 

Desc: configure display parameters 

SeeAlso: AX=A01Bh"PhoenixVIEW/LC" 

----------10A004----------------------------- 


AX = A004h 

BX = video mode??? (0000-00FFh) 

DX = ??? (sent to some port [66ECh???] one bit at a time, high to low) 

??? 



01h failed 

??? 


----------10A005----------------------------- 


AX = A005h 

CL = ??? flags (bits 0,2, others?) 

??? 



01h failed 

??? 


-225-



----------10A006----------------------------- 


AX = A006h 

??? 



01h failed 

??? 


----------10A007----------------------------- 

INT 10 - ATI Mach64 BIOS - GET ??? 

AX = A007h 

Return: AH = 00h (successful) 

AL = ??? (00h) 

BX = ??? (15A0h in examined BIOS) 

DX = segment of BIOS 


----------10A008----------------------------- 

INT 10 - ATI Mach64 BIOS - GET ??? SIZE 

AX = A008h 


??? 


BX = size of ??? (0046h if CL bit 0 clear on entry) 


----------10A009----------------------------- 


AX = A009h 

DX:BX -> buffer for ??? 


??? 



DX:BX buffer filled 

01h failed 

??? 


----------10A00A----------------------------- 


AX = A00Ah 




-226-



AL = ??? (01h) 

BX = ??? (5938h) 

CX = ??? (595Eh) 

DX = segment of BIOS 


----------10A00B----------------------------- 


AX = A00Bh 

BX = ??? 


??? 



01h failed 

??? 


--------p-10A00C----------------------------- 

INT 10 - ATI Mach64 BIOS - SET SLEEP MODE 

AX = A00Ch 

CL = new state 

00h normal operation 

01h standby 

02h suspend 

03h off 



01h failed 

Note: CL bit 2 affects values written to video card's ports 

SeeAlso: AX=A000h,AX=A00Dh,AX=4F00h,AX=4F10h/BL=01h 

----------10A00D----------------------------- 

INT 10 - ATI Mach64 BIOS - GET SLEEP MODE 

AX = A00Dh 


CL = current power mode 

00h normal operation 

01h standby 

02h suspend 

03h off 

SeeAlso: AX=A00Ch,AX=4F10h/BL=02h 

SeeAlso: AX=A00Ch,AX=A00Dh"Rage128"AX=4F10h/BL=02h 




-227-


--------V-10A00D----------------------------- 

INT 10 - ATI Rage128 BIOS - GET ??? 

AX = A00Dh 


00h ??? 

01h ??? 

02h ??? 

03h ??? 

DX:DI -> buffer for results 

??? 



01h failed 

??? 

SeeAlso: AX=A000h,AX=A00Dh"Mach64",AX=A015h 

----------10A00E----------------------------- 

INT 10 - ATI Mach64 BIOS - SET ??? 

AX = A00Eh 

CL = ??? (00h-03h) 



01h failed 

Notes: CL zero/nonzero are treated differently 

NOP in All-in-Wonder 128 BIOS 

SeeAlso: AX=A000h,AX=A00Fh 

----------10A00F----------------------------- 


AX = A00Fh 


CL = ??? (00h-03h, read from PORT 42ECh) 

Note: NOP in All-in-Wonder 128 BIOS 

SeeAlso: AX=A000h,AX=A00Eh 

----------10A010----------------------------- 


AX = A010h 

CL = ??? (80h/other) 

??? 



01h failed 

??? 




-228-






----------10A011----------------------------- 


AX = A011h 


BL = ??? (1Fh) 

BH = ??? (0Fh) 

CL = ??? (00h) 

CH = ??? (0Fh) 

DX = ??? (00FFh) 



--------V-10A012----------------------------- 


AX = A012h 


AL = ??? (00h) 

BX = ??? (0000h) 

CX = ??? (0000h) 

DX = ??? (02ECh) 



--------V-10A013----------------------------- 


AX = A013h 

??? 



01h failed 

??? 

Note: not implemented in examined Mach64 BIOS, always returns AH=01h; NOP in 

examined All-in-Wonder 128 BIOS 


--------V-10A014----------------------------- 

INT 10 - ATI Rage128 BIOS - ??? 

AX = A014h 

CH = ??? (bits 0,1,4) 

??? 




-229-




01h failed 

??? 


--------V-10A015----------------------------- 

INT 10 - ATI Rage128 BIOS - GET/SET ??? 

AX = A015h 

CH = subfunction 

00h get ??? 

01h set ??? 

CL = ??? (only bits 0,1 used on All-in-Wonder 128) 

other NOP 



01h failed 

??? 


--------V-10A016----------------------------- 

INT 10 - ATI Rage128 BIOS - NOP 

AX = A016h 



--------V-10A017----------------------------- 

INT 10 - ATI Rage128 BIOS - ??? 

AX = A017h 

??? 



01h failed 

??? 


--------V-10A01B----------------------------- 

INT 10 - PhoenixVIEW/LC - CRT MONITOR DETECTION 

AX = A01Bh 

??? 

Return: ??? 

Desc: determine whether an external display is currently attached 

SeeAlso: AX=A004h"PhoenixVIEW/LC" 

--------U-10AA------------------------------- 

INT 10 OU - Player's Tool 3.0 - UNINSTALL 

AH = AAh 

Return: ??? 


-230-




Note: this call has been removed in PT 3.996b 

Program: Player's Tool is a game cheater by Dmitry Yakunin & Andy Robinson 

SeeAlso: AH=ABh,INT 2F/AH=AAh 

--------U-10AB------------------------------- 

INT 10 OU - Player's Tool 3.0 - INSTALLATION CHECK 

AH = ABh 

Return: BH = FFh 

??? 

Note: this call has been removed in PT 3.996b 

SeeAlso: AH=AAh,INT 2F/AH=ABh 

--------A-10B0------------------------------- 

INT 10 - CU Writer v1.4 - PUT PIXEL 

AH = B0h 

??? 

Return: ??? 

SeeAlso: AH=A0h"CU Writer",AH=B1h,AH=B2h,AH=B3h,AH=B4h,AH=B5h,AH=D0h 

--------A-10B1------------------------------- 

INT 10 - CU Writer v1.4 - MOVE TO 

AH = B1h 

??? 

Return: ??? 

SeeAlso: AH=B0h,AH=B2h,AH=C0h"CU Writer" 

--------A-10B2------------------------------- 

INT 10 - CU Writer v1.4 - DRAW LINE TO 

AH = B2h 

??? 

Return: ??? 

SeeAlso: AH=B0h,AH=B1h,AH=B3h,AH=B4h,AH=B5h 

--------A-10B3------------------------------- 

INT 10 - CU Writer v1.4 - FLOOD FILL 

AH = B3h 

??? 

Return: ??? 

SeeAlso: AH=B2h,AH=B5h 

--------A-10B4------------------------------- 

INT 10 - CU Writer v1.4 - DRAW RECTANGLE 

AH = B4h 

??? 

Return: ??? 

SeeAlso: AH=B0h,AH=B2h,AH=B3h,AH=B5h 

--------A-10B5------------------------------- 


-231-




INT 10 - CU Writer v1.4 - DRAW FILLED RECTANGLE 

AH = B5h 

??? 

Return: ??? 

SeeAlso: AH=B0h,AH=B2h,AH=B3h,AH=B4h 

--------V-10BB------------------------------- 

INT 10 U - Doorway - SET BIOS/DIRECT REDIRECTION 

AH = BBh 

AL = new redirection mode 

00h BIOS (hook and redirect INT 10h,etc.) 

01h DIRECT (scan video memory for changes) 

Return: ??? 

SeeAlso: INT 16/AH=67h"Doorway" 

--------V-10BD44----------------------------- 

INT 10 U - Compaq QVision - ??? 

AX = BD44h 

??? 

Return: ??? 

Note: called by Compaq's MTX132.COM, which places the QVision in 132-column 

mode 

--------!---Section-------------------------- 


-232-

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