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From: notes@isucs1.UUCP
Newsgroups: net.micro.pc
Subject: Re: need help with interrupt driven seri
Message-ID: <462@isucs1.UUCP>
Date: Mon, 14-Oct-85 04:06:22 EDT
Article-I.D.: isucs1.462
Posted: Mon Oct 14 04:06:22 1985
Date-Received: Thu, 17-Oct-85 01:27:13 EDT
Sender: notes@isucs1.UUCP
Organization: Iowa State University
Lines: 22
Nf-ID: #R:felix:-52000:isucs1:10600013:000:756
Nf-From: isucs1!dueland    Oct  7 19:53:00 1985



	Serial input by way of the IBM-PC and compatible BIOS
	_is_ buffered.  There is an  MSDOS interrupt (I'm not sure
	which one offhand) that can return a character from the
	buffer, as well as return serial port and buffer status.

	Some compilers generate code that periodically reads
	characters to see if any flow control characters have been
	typed (Turbo Pascal does - use the {$c-} compiler directive
	to turn this off), and thereby throw away your buffered
	characters, making it seem as if they were lost.

	When writing your own interrupt routine be sure to re-enable
	the interrupts in the interrupt routine.



  UUCP: {okstate|umn-cs}!isucs1!dueland   CSNET: dueland@iowa-state

     "Don't do anything I wouldn't do"  -  Hunter S. Thompson