PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SPAL-B6-0 (front) | PAL | 9323 | SHVC-1A0N-20 | D431A | - | - | - |
| SPAL-B6-0 (front) (back) | PAL | 9338 | SHVC-1A0N-20 | D431A | - | - | - |
| SNS-B6-0 (front) | USA | 9323 | SHVC-1A0N-20 | D411A | - | - | - |
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