Technical SID documentation
The following is a transcription of Appendix O in the Commodore 64 Programmer's
Reference Guide done by Asger Alstrup.
HTML version and pictures by Andreas Varga (email@example.com).
This is an examination of the SID waveforms that was developed and conceived
by Asger Alstrup. HTML version by Andreas Varga.
Description of the:
Here you'll find additional technical info, but be careful, some
of this information is know to be wrong !!!
Here's a bit of SID history. An article published in the Swedish
computer magazine called "DatorMagazin" in 1987. It covers the
creation of the SID chip. This article was sent to me by King Fisher of
To learn more about the SID and its creator read this interview with
Bob Yannes. It contains a full description of the SID's inner workings.
Last updated: Apr 3 1997