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- Newsgroups: comp.os.msdos.programmer
- Path: 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
-
- 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
-
-