PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SNS-SE-0 (front) | USA | 9302 | SHVC-1A3B-13 | D411A | 64k | MB74LS139 | - |
| SNS-SE-0 (front) | USA | 9323 | SHVC-1A3B-20 | D411A | 64k | HD74LS139P | - |
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