Amstrad CPC Joystick port pinout
_________________ \ o1 o2 o3 o4 o5/ \ o6 o7 o8 o9 / \___________/
| Pin No. | Signal Name | Description |
| 1 | Up | |
| 2 | Down | |
| 3 | Left | |
| 4 | Right | |
| 5 | Fire 3 | undocumented, used by the AMX Mouse for example |
| 6 | Fire 2 | |
| 7 | Fire 1 | Other systems pull +5V from here for auto-fire circuits! |
| 8 | GND | "Common" |
| 9 | GND2 | "Common 2" for 2nd joystick |
In this case, the numbering from the manual matches that of standard plugs. For a wiring diagram of an Y-cable with which you can use two joysticks on your Amstrad/Schneider CPC, see Joystick Y-cables.