To use it, the file must be placed in the emulator's BIOS directory, often remaining compressed within the naomi.zip archive . If you are missing this file, MAME will report a "Required ROM/disk images for the selected system are missing" error upon startup . Are you trying to in MAME, or
, documenting how Sega’s arcade hardware from the late 90s and early 2000s functioned. Emulation Hurdles Sp5001-a.bin Mame