PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SPAL-ABUP-0 (front) | PAL | 9522,9521 | SHVC-2A0N-20 | D413B | - | SN74LS00N | - |
| SNS-P-ABUE-0 (front) | USA | 9713 | MAXI-1A0N-30-2 | D411B | - | - | - |
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