| Address | Size | Description |
| $100 | 7 bytes | “NEO-GEO” string (first cartridge recognition code). |
| $107 | byte | System version (0 for cartridge systems, 1 or 2 for adapted cart games on Neo CD ?). |
| $108 | word | NGH number in BCD, 0000 prohibited. |
| $10A | longword | Total P ROM data size in bytes. |
| $10E | longword | Pointer to backup RAM data block (in 68k user RAM). The first 2 bytes are the debug DIPs. |
| $112 | word | Size of the required game save data in bytes. |
| $114 | byte | Eyecatcher animation flag. 0=Done by system ROM, 1=Done by game, 2=Nothing. |
| $115 | byte | Sprite bank number (upper 8 bits of tile number) for the eye-catcher logo, if done by system ROM. |
| $116 | longword | Pointer to Japanese software DIPs settings layout. |
| $11A | longword | Pointer to US settings software DIPs settings layout. |
| $11E | longword | Pointer to Euro settings software DIPs settings layout. |
| $122 | 6 bytes | JMP to USER subroutine (code start). |
| $128 | 6 bytes | JMP to PLAYER_START subroutine. |
| $12E | 6 bytes | JMP to DEMO_END subroutine. |
| $134 | 6 bytes | JMP to COIN_SOUND subroutine. |
| $182 | longword | Pointer to security code (second cartridge recognition code). |
| $186 | longword | Unknown (seems only set to 0x00000000 on boards containing Spanish software DIPs). |
| $18A | longword | Unknown (seems only set to 0x00000001 on boards containing Spanish software DIPs). |
| $18E | longword | Pointer to Spanish settings software DIPs settings layout (not all games use this). |