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From: fijma@cs.utwente.nl (Duco Fijma)
Newsgroups: comp.os.msdos.programmer
Subject: Re: How to do asynch communications (really asynch)?
Keywords: COM, ASYNCH
Message-ID: <1991May31.095315@cs.utwente.nl>
Date: 31 May 91 07:53:15 GMT
References: <hess.675506680@rospc1>
Sender: fijma@cs (Duco Fijma)
Distribution: comp
Organization: University of Twente, Dept. of Computer Science
Lines: 27
Originator: fijma@utis58


In article <hess.675506680@rospc1>, hess@rospc1.informatik.uni-hamburg.de (Hauke Hess) writes:
|> Hello,
|> 
|> I`m trying to connect a terminal to a MS DOS Computer and learnt, that
|> the serial port is unbuffered. Unfortunately I`m no technichian who could
|> easily write an interrupt routine which buffers the COMx port. Had anyone 
|> did so?
|> 
|> Hauke Hess / University Hamburg / Germany

In fact, MS-DOS does not support the serial port at all. The send/receive 
routines in the PC's BIOS do not contain much more than a in/out instruction
to the communications chip.

Device drivers which give a better support are often written and often asked 
for. Once in a while one floates through the net. You can also check the famous
ftp-sites, but I don't know any details.

Duco


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|      Duco Fijma, University of Twente, Dept. of Compter Science / SETI      |
|      P.O. Box 217, 7500 AE Enschede, The Netherlands                        |
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