Appendix 11
Technical information
Connector pin assignments
The pin assignments for the connections on the rear of the computer are shown
in the diagrams below. Each view is towards the socket, from outside the
computer's case.
| Joystick | 9 Way D-type plug | |
| Internal 6522 connections: | ||
| 1 | Up (negative true) | PB3 |
| 2 | Down (negative true) | PB2 |
| 3 | Left (negative true) | PBI |
| 4 | Right (negative true) | PB4 |
| 5 | Internal connection | CBI |
| 6 | Fire | PB0 |
| 7 | + 5V | |
| 8 | 0V | |
| 9 | Internal connection | CB2 |
App 11.1