Article View: comp.sys.ibm.pc
Article #8642Re: Need help with PC interrupt handler
From: Wm E Davidsen Jr
Date: Mon, 15 Jan 1990 17:37
Date: Mon, 15 Jan 1990 17:37
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985 bytes
In article <16815@duke.cs.duke.edu> erd@lear.cs.duke.edu (Ed Darken) writes:
| Reload and start clock (using OUT instructions)
| Set parallel port bit low (using OUT instructions)
==> Disable interrupts
| Send non-specific EOI (using OUT instruction)
| Restore data and stack segments
| Restore regs
| Return from interrupt (IRET)
--
bill davidsen (davidsen@crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen)
"Stupidity, like virtue, is its own reward" -me
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!uunet!crdgw1!crdos1!davidsenReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!uunet!crdgw1!crdos1!davidsen From: davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr) Newsgroups: comp.sys.ibm.pc Subject: Re: Need help with PC interrupt handler Keywords: Despair, agony, confusion Message-ID: <2013@crdos1.crd.ge.COM> Date: 15 Jan 90 17:37:39 GMT References: <16815@duke.cs.duke.edu> Reply-To: davidsen@crdos1.crd.ge.com (bill davidsen) Organization: GE Corp R&D Center, Schenectady NY Lines: 12