I/O Map
The following table lists the main I/O definitions of the RCA Video Coin Arcade.
| EF1 | Fire player A |
| EF3 | Fire player B |
| EF4 | Coin |
| OUT 1 | Display on |
| OUT 5 | Tone latch |
| OUT 3 & 6 | Tone on/off |
| INP 5 | Parameter switch |
| INP 6 | Direction keys & coin reset |
The following table lists the main I/O definitions of the RCA Video Coin Arcade.
| EF1 | Fire player A |
| EF3 | Fire player B |
| EF4 | Coin |
| OUT 1 | Display on |
| OUT 5 | Tone latch |
| OUT 3 & 6 | Tone on/off |
| INP 5 | Parameter switch |
| INP 6 | Direction keys & coin reset |