PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SNS-CB-0 (front) | USA | 9139 | SHVC-1A3B-11 | D411 | 64k | SN75LS139N | - |
| SNS-CB-0 (front) | USA | 9141 | SHVC-1A3B-12 | D411 | 64k | SN75LS139N | - |
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