BIOS files are version-specific to MAME releases.
Without the correct BIOS, many games will fail to start or show a black/error screen. mame bios
: Place the BIOS .zip files directly into the \roms folder within your MAME installation directory. BIOS files are version-specific to MAME releases
Use MAME’s built-in audit:
Because BIOS files contain code owned by companies like SNK, Sega, and Atari, they are copyrighted material. they are copyrighted material.