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From: "JM Rams" <josepmaria AT turomas DOT com>
To: <djgpp AT delorie DOT com>
Subject: RE: PM interrupt handling - how to call old old ISR with slower rate than my new ISR
Date: Fri, 2 Nov 2007 11:52:59 +0100
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Well, I don't simulate  real time clock, I chain my new interrupt, then real
time interrupt is called more than 18,3 times per second. The thing I do is
discount real time counters to make the increment only 18,3 times per
second.

All works, hour, callendar, floppy disk. "uclock" don`t works because it
uses registers of timer. I do my own uclock.