Xref: utzoo comp.sys.ibm.pc:15722 comp.lang.c:10221
Path: utzoo!attcan!uunet!steinmetz!davidsen
From: davidsen@steinmetz.ge.com (William E. Davidsen Jr)
Newsgroups: comp.sys.ibm.pc,comp.lang.c
Subject: Re: The 8259 interrupt controller (HELP!)
Keywords: interrupt, C
Message-ID: <10901@steinmetz.ge.com>
Date: 19 May 88 14:17:59 GMT
References: <531@wsccs.UUCP>
Reply-To: davidsen@crdos1.UUCP (bill davidsen)
Organization: General Electric CRD, Schenectady, NY
Lines: 16

I don't have the info right here, but I did this, here's where to find
out how.
	IBM AT tech ref (or XT):
	  section on the serial interface:
	    tells how to set the USART
	  section on the motherboard:
	    how to program the 8259 (just clear a bit in the imask,
	    DON'T lose the values of the other bits)
	    There's a 1 bit output to enable serial ints on the MB
	Intel 8259 spec sheet:
	  How to use the beast, don't forget EOI, don't change
	  the rest of the settings or DOS won't work
-- 
	bill davidsen		(wedu@ge-crd.arpa)
  {uunet | philabs | seismo}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me