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Wiring List for P20: | --------------------------------|----------------------------------- +5V RETURN | A | 1 | +5V RETURN ----------------------------|---|---|------------------------------- +5V REG | B | 2 | +5V REG ----------------------------|---|---|------------------------------- +10.3V | C | 3 | ----------------------------|---|---|------------------------------- | D | 4 | ----------------------------|---|---|------------------------------- | E | 5 | ----------------------------|---|---|------------------------------- | F | 6 | ----------------------------|---|---|------------------------------- | H | 7 | ----------------------------|---|---|------------------------------- COIN COUNTER L | J | 8 | COIN COUNTER R ----------------------------|---|---|------------------------------- | K | 9 | TRAK-BALL LIGHT ----------------------------|---|---|------------------------------- | L | 10| ----------------------------|---|---|------------------------------- | M | 11| ----------------------------|---|---|------------------------------- | N | 12| ----------------------------|---|---|------------------------------- | P | 13| ----------------------------|---|---|------------------------------- | R | 14| ----------------------------|---|---|------------------------------- RED | S | 15| BLUE ----------------------------|---|---|------------------------------- VIDEO RETURN | T | 16| GREEN ----------------------------|---|---|------------------------------- V SYNC | U | 17| COMPOSITE SYNC ----------------------------|---|---|------------------------------- AUDIO 1 | V | 18| H SYNC ----------------------------|---|---|------------------------------- | W | 19| AUDIO 2 ----------------------------|---|---|------------------------------- | X | 20| ----------------------------|---|---|------------------------------- +5V (CONTROLS) | Y | 21| + SENSE ----------------------------|---|---|------------------------------- GND | Z | 22| - SENSE -------------------------------------------------------------------- Note: AUDIO 1 may be on the W pin and not the V pin. To my knowledge it has not been verified which of these two pins is correct. Wiring List for P19: | --------------------------------|----------------------------------- | A | 1 | ----------------------------|---|---|------------------------------- | B | 2 | ----------------------------|---|---|------------------------------- | C | 3 | ----------------------------|---|---|------------------------------- | D | 4 | ----------------------------|---|---|------------------------------- H DIR | E | 5 | H CLK ----------------------------|---|---|------------------------------- V DIR | F | 6 | V CLK ----------------------------|---|---|------------------------------- START 1/JUMP | H | 7 | SELF TEST ----------------------------|---|---|------------------------------- COIN RIGHT | J | 8 | COIN AUX ----------------------------|---|---|------------------------------- | K | 9 | COIN LEFT ----------------------------|---|---|------------------------------- START 2/JUMP | L | 10| ----------------------------|---|---|------------------------------- | M | 11| -------------------------------------------------------------------- |
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