Place BIOS to MegaCD folder with name boot.rom

About 150 games tested without long playing, US/EU regions only.

• Microcosm & Ultraverse Prime (US) - graphic glitch in game
• Supreme Warrior - Ying Heung (US) - can't select 2 disk

• CUE + single image
• CUE + multiple images (image per track)
• CHD file

ZIP is supported but doesn't work due to long positioning time. So DON'T zip the images!

support BIOS per game. Place cd_bios.rom in game's folder.

Place cartridge dump named cart.rom into game's folder