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From: | Charles Sandmann <sandmann AT clio DOT rice DOT edu> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: missing hardware interrupt intermittently |
Date: | Mon, 24 Oct 2005 22:12:45 CDT |
Organization: | Rice University, Houston, TX |
Lines: | 13 |
Message-ID: | <435da2ad.sandmann@clio.rice.edu> |
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To: | djgpp AT delorie DOT com |
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Reply-To: | djgpp AT delorie DOT com |
> Our system is missing HW interrupt 6 very intermittently ... > I suspect that the interrupt is > missed when cswdpmi.exe is in the process of loading or unloading. > ...Any ideas on missed interrupts while cwsdpmi.exe is loading or unloading? CWSDPMI reprograms the PIC on entry and exit, so anything that happens in that time could be lost. The startup has some extended sections with interrupts disabled when setting up protected mode (A20 stuff, etc), but I would expect that to result in a late interrupt, not one missed. You could try PMODETSR as an alterate replacement to see if if it's compatible and avoids the problem; it has a different way of handling interrupts.
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