PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SPAL-R2-0 (front) | PAL | 9347,9344 | SHVC-2J0N-01 | D413A | - | SN74LS00N | - |
| SNS-R2-0 (front) | USA | 93xx | SHVC-2J0N-01 | D411A | - | HD74LS00P | - |
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