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From: | Martin Steuer <ms172554 AT mail DOT inf DOT tu-dresden DOT de> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: WinXP's unbreakable console cursor |
Date: | Thu, 17 Oct 2002 12:14:09 +0200 |
Lines: | 27 |
Message-ID: | <3DAE8D71.7050904@mail.inf.tu-dresden.de> |
References: | <3dad538f_1 AT news DOT arcor-ip DOT de> <3dad920f DOT sandmann AT clio DOT rice DOT edu> |
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To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Charles Sandmann wrote: > I've looked at an alternate delay implementation. Getting timer tick > resolution is fairly easy, but since uclock() is also flakey I don't have > not checked in a updated delay() into the new release yet. > I have access to a Win2k machine here and tried reading the latched timer tick this seems to work (using DJ's public compiler service :). My own timer routines are based on an absolute tick count which is composed of the BIOS' timer ticks low-word and the tick count. This should also work under NT-family. But that way it requires a call to the timing routines at least approx. each hour or alternatively each day. This wont suffice the requirements of uclock(), right? But it should be allright as an alternate delay()implementation. I think you're speaking of such an implementation. Under some conditions however, consistency of the BIOS timer tick and the PIT's counting value is hard to get, I made this experience under Win9x: only some strange workarounds made it work. But I guess many of the fixes that make DJGPP more NT-reliable are a bit strange... However it was surprising for me to see that Win2k at least virtualizes the PIT's ports.
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