Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site felix.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!vax135!cornell!uw-beaver!tektronix!hplabs!sdcrdcf!trwrb!scgvaxd!felix!zemon From: zemon@felix.UUCP (Art Zemon) Newsgroups: net.micro.pc Subject: need help with interrupt driven serial I/O Message-ID: <520@felix.UUCP> Date: Mon, 30-Sep-85 01:02:09 EDT Article-I.D.: felix.520 Posted: Mon Sep 30 01:02:09 1985 Date-Received: Fri, 4-Oct-85 06:01:06 EDT Distribution: na Organization: FileNet Corp., Costa Mesa, CA Lines: 24 I'm trying to write a program which, among other things, must have buffered input from one of the serial ports. I figured that the way to do that was to hook my own buffering routine into the "Serial Device #1" interrupt (INT 0CH). So I used function 25H to "Set Interrupt Vector" and transmitted a character to serial port #1 and... ...nothing happened. My interrupt service routine was never called. The rest of the program continued to run normally but nothing else happened. After I got over my disappointment and read the book (MS-DOS Version 2 Programmer's Utility Pack) some more I decided to write to net.micro.pc in the hopes that someone out there can supply an explaination and (with luck) a fix. To be a bit more concise, why didn't my interrupt service routine get called and what do I do to enable interrupt driver serial input? Thanks, -- -- Art Zemon FileNet Corp. ...! {decvax, ihnp4, ucbvax} !trwrb!felix!zemon