PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SPAL-R7-0 (front) | PAL | 9414 | SHVC-2A0N-11 | D413A | - | SN74LS00N | - |
| SNS-R7-0 (front) | USA | 9401,9402 | SHVC-2A0N-11 | D411A | - | SN74LS00N | - |
| SNS-R7-0 (front) | USA | 9402 | SHVC-2A0N-11 | D411A | - | SN74LS00N | - |
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