Unlike most game emulators, MAME requires the game file version to perfectly match the emulator version. If you use a ROM meant for a newer or older version of MAME, the game will likely fail to load due to missing or renamed internal file dumps.
In the emulation community, a full "set" of is often called a 0.139u1 Non-Merged Set . Here is why this specific set commands respect:
Many games (like Neo Geo titles) require a neogeo.zip BIOS file to be present in the same roms folder.
