Path: 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

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