PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SPAL-V2-0 (front) | PAL | 9413 | SHVC-1B5B-02 | D413A | 256k | SN74LS139N, SN74HCU04N | DSP2 |
| SNS-V2-0 (front) | USA | 9318 | SHVC-1B5B-02 | D411A | 256k | 74LS139N, 74HCU04N | DSP2 |
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