| BIOS Name | MAME Set Name | Region | Features | |-----------|---------------|--------|----------| | Neo Geo MVS (Arcade) | neogeo | Universal | Standard arcade behavior, soft DIP settings | | Neo Geo AES (Console) | aes (via neogeo set) | Region-variant | Home mode, no coin insert, memory card | | Universe BIOS (Unibios) | uni-bios.rom | Custom | Cheats, region switching, color fix, debug | | Development BIOS | dev-bios.rom | N/A | Hardware testing |
In MAME, the BIOS is packaged as a named neogeo.zip . 3. Key BIOS Versions (MAME Context) Different BIOS versions affect behavior, region defaults, and cheat menus. Common versions: mame neogeo bios
| Filename | CRC32 | Description | |----------|-------|-------------| | vs-bios.rom | F0E8F27D | Standard MVS BIOS | | asia-s3.rom | 91B64BE3 | Asia region | | japan-j3.rom | D4F6C4CC | Japan region | | usa-m5.rom | B8C97A2A | USA region | | sp-s3.sp1 | 91B64BE3 | Common system ROM | | sp-j2.sp1 | AC5C991C | Japan alternate | | sp1-u2.bin | 5A2B87FC | USA alternate | | sfix.sfix | C2EA0CFD | Fix layer graphics data (required) | | sm1.sm1 | 94416D3A | Sound CPU BIOS (Z80) | | 000-lo.lo | 5A86CFF5 | Bootloader / logo data | Older MAME versions (pre-0.162) used different file names (e.g., neo-po.bin ). Always match your MAME version. 5. Installation & Placement Standard directory structure: | BIOS Name | MAME Set Name |