Commodore Amiga A2000 - Appendix H Keyboard

APPENDIX H
KEYBOARD
This appendix contains the keyboard interface specification for A1000, A500 and A2000.
The keyboard plugs into the Amiga computer via a cable with four primary connections.
The four wires provide 5-volt power, ground, and signals called KCLK (keyboard clock)
and KDAT keyboard data). KCLK is unidirectional and always driven by the keyboard;
KDAT is driven by both the keyboard and the computer. Both signals are open-collector,
there are pullup resistors in both the keyboard (inside the keyboard microprocessor) and
the computer.
- Appendix H 343 -