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Article #7753

Lower the priority of an interrupt

#7753
From: matt
Date: Mon, 25 Jan 1993 20:36
16 lines
1020 bytes
Here is the problem:

I have written an interrupt handler for the clock
interrupt that basically checks to see if a task that requires
lower priority should run.  So, what I would like to do is lower the priority
of the current interrupt to a lower level.  I tried doing this by changing
the mask register in the 8259A, but this didn't seem to do the trick.

I think the problem is that I am doing a non-specific end of interrupt
rather than a specific end of interrupt, or that somethng else must be changed
besides just the mask regsiter...  Any ideas (of working pieces of code)?

Thanks in advance,

-- Matt
  
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Message-ID: <1993Jan25.203640.25918@news.nd.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!news.nd.edu!bach!rohrs

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Newsgroups: comp.os.msdos.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!news.nd.edu!bach!rohrs
From: rohrs@bach.helios.nd.edu (matt)
Subject: Lower the priority of an interrupt
Message-ID: <1993Jan25.203640.25918@news.nd.edu>
Sender: news@news.nd.edu (USENET News System)
Organization: OUC, University of Notre Dame
Distribution: usa
Date: Mon, 25 Jan 1993 20:36:40 GMT
Lines: 16