Quick overview of known BIOS versions, may not be completely accurate. Various third-party BIOS (e.g. Universe BIOS, Neopen BIOS, smkdan's Diagnostics BIOS) are missing from this list.
MVS BIOS
| Filename |
Region |
Description
|
| sp1.jipan.1024 |
Japan |
Japan MVS v1
|
| sp1-1v1_3db8c.bin |
Japan |
Japanese Hotel v1.3
|
| sp-j2.sp1 |
Japan |
Japan MVS v2
|
| vs-bios.rom |
Japan |
Japan MVS v3
|
| japan-j3.bin |
Japan |
Japan MVS J3
|
| 236-bios.bin |
Asia |
The Irritating Maze BIOS (Trackball support)
|
| asia-s3.bin |
Asia |
Asia MVS v3
|
| sp-45.sp1 |
Asia |
NEO-MVH MV1C
|
| sp-e.sp1 |
USA |
USA MVS v1
|
| sp-u2.sp1 |
USA |
USA MVS v2?
|
| sp-s.sp1 |
Europe |
Europe MVS v1
|
| sp-s2.sp1 |
Europe |
Europe MVS v2 (Visualization)
|
AES BIOS
todo: USA BIOS exists, even if most people swapped out the chip. Has it been dumped? Same question for Korean and PAL home consoles.
| Filename |
Region |
Description
|
| neo-po.bin |
Japan |
Japan AES
|
| neo-epo.bin |
Asia |
Asia AES
|
| neodebug.bin |
Japan |
Debug/Development BIOS
|
CD System BIOS
Regions are handled via a set of jumpers. Does the Brazilian/Portuguese language system have a different BIOS ROM?
| Filename |
Description
|
| `top-sp1.bin` |
Top-Loading NeoGeo CD
|
| front-sp1.bin |
Front-Loading NeoGeo CD
|
| neocd.bin |
NeoGeo CDZ (Visualization)
|
