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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!ihnp4!ihlpm!michael1
From: michael1@ihlpm.UUCP (pula)
Newsgroups: net.micro.pc
Subject: PC INTERRUPT VECTORS
Message-ID: <295@ihlpm.UUCP>
Date: Thu, 13-Jun-85 09:12:03 EDT
Article-I.D.: ihlpm.295
Posted: Thu Jun 13 09:12:03 1985
Date-Received: Fri, 14-Jun-85 00:44:02 EDT
Distribution: net
Organization: AT&T Bell Laboratories
Lines: 24


  And now for something completely different ...
  Well maybe slightly different.

  I am working with some custom boards for the IBM PC/XT which require
  extensive I/O.  I would like to implement some interrupt routines
  for the PC which will signal when data is waiting to be received
  or need to be transmitted.  Actually, I just need to look at a few
  memory locations and determine what needs to be done via the contents
  at those locations.

  My question and PLEA FOR HELP is this:  I could poll those addresses
  and check for certain conditions or I can (would like to) write
  interrupt service routines.  How do I assign interrupt vectors on the
  PC (DOS 3.0) so that when certain conditions occur, my program will be
  interrupted?

  I would like to implement this as soon as possible so any help would be
  appreciated.  Replies to myself or the net are OK.  I will summarize the
  responses however and repost them.

 Thanks in advance!
 -mike-
 ihnp4!ihlpm!michael1