This article was posted to the Usenet group alt.hackers in
1995; any technical information is probably outdated.
Serial / PS/2 Mice
Article: 7364 of alt.hackers From: simonc@jumper.mcc.ac.uk (Simon Cooke) Newsgroups: alt.hackers Subject: Serial / PS/2 Mice Date: 13 Feb 1995 13:02:54 GMT Organization: Manchester Computing Centre Lines: 15 Approved: Simon Cooke Message-ID: 3hnl9u$5v4@yama.mcc.ac.uk NNTP-Posting-Host: jumper.mcc.ac.uk X-Newsreader: TIN [version 1.2 PL2] Status: RO
Hi Guys... Anybody out here got any idea how the serial mouse / keyboard work? I'm talking serial data format, power etc here :) Cheers, Simon ObHackedOff: Opened up the mouse, checked the xtal to find out what baud it was running at. All it said was S429, so I got out the oscilloscope -- it was about 28MHz (IIRC). Sooo.. played around with the scope some more, now I can read the mouse buttons. But can I get the rest of the data in so called pS/2 packet form? Can I hell... /AND/ I'm getting framing errors all the time...