Article View: comp.os.msdos.programmer
Article #1864Re: Microsoft C & serial comms
From: Arjun Krishna Kondamani
Date: Mon, 13 Aug 1990 17:21
Date: Mon, 13 Aug 1990 17:21
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In article <990@dcl-vitus.comp.lancs.ac.uk> se@comp.lancs.ac.uk (Steve Elliott) writes: >I'd like some advice/help on the above topic. >Specifically, I'm trying to program a card reader through >COM1 with a Microsoft C (v5.1) program. >To initialise the lock, the docs state that "break level must be >off more than 2 seconds". >That's got me stumped. What is break level? Can I program it from C? >If so, how? >Thanks, > Steve You can use function 33H to turn on or off extensive chking for the Break char (CTRL-C). Also, BREAK command. Usually, interrupt on 21H and let the AX register know that you r using 33H. I'm sure you can do this from your C program. Arjun. -- kondaman@aludra.usc.edu@usc.edu 213-746-1151 (evening) 213-743-6210 (day) Don't go around saying the world owes you a living. The world owes you nothing. It was here first. -- Mark Twain
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!usc!chaph.usc.edu!aludra.usc.edu From: kondaman@aludra.usc.edu (Arjun Krishna Kondamani) Newsgroups: comp.os.msdos.programmer,alt.msdos.programmer Subject: Re: Microsoft C & serial comms Summary: function 33H and BREAK command Message-ID: <11382@chaph.usc.edu> Date: 13 Aug 90 17:21:14 GMT References: <990@dcl-vitus.comp.lancs.ac.uk> Sender: news@chaph.usc.edu Followup-To: comp.os.msdos.programmer Organization: University of Southern California, Los Angeles, CA Lines: 24 Nntp-Posting-Host: aludra.usc.edu