PCB Information
| ROM Chip ID | Region | Known Man. Dates | PCB Type | CIC | SRAM | Decoder/ Logic Circuit | Special Chips |
|---|---|---|---|---|---|---|---|
| SHVC-ABZJ-0 (front) | Japan | 9513 | SHVC-1K0N-01 | D411B | - | SN74LS139AN / SN74HCU04N | DSP1 B |
| SNS-ABZE-0 (front) (back) | USA | 9440 | SHVC-1K0N-01 | D411A | - | SN74LS139AN / SN74HC04N | DSP1 B |
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