commodore keyboards hardware details

From: Groepaz <>
Date: Sat, 24 Nov 2012 10:30:12 +0100
Message-Id: <>
hy hackers!

i have another question mostly for the PET and CBM2 guys... i have added 
better emulation of the keyboard matrix to x64 the other day, and some part of 
the code turned out generic enough that it can likely be used for any other 
keyboard that works similar - ie which is a simple matrix of switches with no 
diodes preventing shortcuts in the matrix.

so the question is: do the PET and CBM2 keyboards work the same?

also if there exist keyboard test programs for these machines (actually, any 
machine except c64 - ie also +4,vic20 etc), which eventually can be used to 
verify if certain effects work (such as ghostkeys when pressing several keys 
at once), please point me to them :)


When you take stuff from one writer, it's plagiarism; but when you take it 
from many writers, it's research. 
<Wilson Mizner>

       Message was sent through the cbm-hackers mailing list
Received on 2012-11-24 10:00:33

Archive generated by hypermail 2.2.0.