TCP-group 1991
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updated NOS code on thumper
- To: karn@ka9q.bellcore.com, tcp-group@ucsd.edu
- Subject: updated NOS code on thumper
- From: val!ben@cs.utexas.edu (Ben Thornton)
- Date: Tue, 29 Jan 91 09:15:58 CST
> It turns out that you can convert the PC/AT's raw 8254 clocks (generated by
> a 3.579545... MHz NTSC color burst crystal divided by 3) exactly into
> milliseconds by multiplying by 11 and dividing by 13,125.
> ...
> Phil
Well... almost correct. Actually the crystal is a 14.31818 MHz crystal
(4x color subcarrier). This is divided by 12 to 1.19318 MHz, which works
out to the same frequency as the one you are working with.
Ben
--
Ben Thornton packet: WD5HLS @ KB5PM
Video Associates Internet: ben@val.com
Austin, TX uucp: ...!cs.utexas.edu!val!ben
Did Schrodinger exist? ...or was that in another universe?