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From: BILLW@SU-SUSHI.ARPA (Chops)
Newsgroups: net.micro
Subject: DOS reentrency...
Message-ID: <10859@brl-tgr.ARPA>
Date: Mon, 20-May-85 21:54:30 EDT
Article-I.D.: brl-tgr.10859
Posted: Mon May 20 21:54:30 1985
Date-Received: Thu, 23-May-85 00:42:36 EDT
Sender: news@brl-tgr.ARPA
Lines: 15

I want to be able to have a background process read from a serial
port and write to disk occasionally.  DOS is not reentrant, although
there are supposed to be ways around this (Is there an example anywhere?).
The DOS documentation implies that the low numbered dos calls are
handled differently, that you can, for example, write to the console
even if you are in the middle of some other DOS call. My specific
questions are these:

	1) Is this true
	2) does it work the other way around (eg can I write to a fiel
	   while DOS is waiting for a character to be typed on CON:)

Thanks
Bill W
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