PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SNS-3D-0 (front) | USA | 9404 | SHVC-2B3B-01 | D411A | 64k | SN74LS139N / SN74HCU04N | DSP-1A |
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