(At the Atari)
UNKNOWN CONNECTOR at the Atari.
| Pin | Description |
|---|---|
| 1 | Keypad -- right column |
| 2 | Keypad -- middle column |
| 3 | Keypad -- left column |
| 4 | Start, Pause, and Reset common |
| 5 | Keypad -- third row and Reset |
| 6 | Keypad -- second row and Pause |
| 7 | Keypad -- top row and Start |
| 8 | Keypad -- bottom row |
| 9 | Pot common |
| 10 | Horizontal pot (POT0, 2, 4, 6) |
| 11 | Vertical pot (POT1, 3, 5, 7) |
| 12 | 5 volts DC |
| 13 | Bottom side buttons (TRIG0, 1, 2, 3) |
| 14 | Top side buttons |
| 15 | 0 volts -- ground |
