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From: jim@owlmnt.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Where to get started with TSR's
Message-ID: <188@owlmnt.UUCP>
Date: Wed, 18-Nov-87 21:42:15 EST
Article-I.D.: owlmnt.188
Posted: Wed Nov 18 21:42:15 1987
Date-Received: Sat, 21-Nov-87 18:49:34 EST
Distribution: na
Organization: Owl Mountain Engineering Inc. New Carlisile Oh.
Lines: 12
Keywords: TSR Background ASYNC comm

I have to develop a system that sets up a background TSR to receive and transmit
files from an async port.  I know how to do simple things with TSR's but I'm not
sure about all the places where I might get burnt.

More specifically, what, if anything, do I need to do to be able to safely open
and close files from a TSR?  Are the use of the DOS "Critical Region" flag and
INT 28H enough?
-- 

Jim McCool
Owl Mountain Inc.
Usenet: wright!owlmnt!jim