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Path: utzoo!watmath!clyde!burl!ulysses!allegra!bellcore!decvax!mcnc!unc!colbert
From: colbert@unc.UUCP (Darylene Colbert)
Newsgroups: net.micro.pc
Subject: 3270 PC Communications Problem
Message-ID: <57@unc.UUCP>
Date: Tue, 15-Jan-85 15:16:54 EST
Article-I.D.: unc.57
Posted: Tue Jan 15 15:16:54 1985
Date-Received: Fri, 18-Jan-85 01:51:41 EST
Organization: CS Dept., U. of N. Carolina at Chapel Hill
Lines: 15

<>

For some reason the 3270 PC loses incoming data from the RS232 port when
a BIOS call is made to change the displa to medium resolution graphics mode
(I have the APA card).  I have tested my interrupt-driven program on 3
different 3270 PC's and all share the problem.  The same program works fine
on a PC/XT.  It appears that approximately 40ms worth of data is lost when
the call is made.  Does anyone have a clue to what is going on and what I
can do to get around it?

Thanks.
Edmund Burnette
:wq