PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SPAL-8M-0 (front) | PAL | 9406 | SHVC-1A0N-20 | D413A | - | - | - |
| Prototype (front) | USA | SHVC-2P3B-01 | D411A | 64k | MC74LS139N | - | |
| SNS-8M-0 (front) | USA | 9349 | SHVC-1A0N-20 | D411A | - | - | - |
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