Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!umich!yale!think!bbn.com!husc6!endor!albert
From: albert@endor.harvard.edu (David Albert)
Newsgroups: comp.sys.ibm.pc
Subject: Intermittent problem with Serial Port on XT
Message-ID: <2785@husc6.harvard.edu>
Date: 4 May 90 19:54:55 GMT
Sender: news@husc6.harvard.edu
Reply-To: albert@endor.UUCP (David Albert)
Organization: Aiken Computation Lab Harvard, Cambridge, MA
Lines: 20

I installed a new Multi-IO board on my XT recently, and ever since
have had problems with my (old) serial ports.  (I had trouble with
the serial ports on the new board, so I disabled them both.)  Here's
the problem:

About half of the time, when I turn on my computer, the COM1 port
hears the keyboard but does not respond to the monitor.  That is,
if I turn on my modem, connect and type "atdt" I see the lights flash
on the modem, the phone dials, and the lights flash some more when
the remote host presumably sends its login message, but none of the
text (including what I type) shows up on my screen.  The other half
of the time, the port works normally.

What might cause this problem?

Thanks,
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David Albert			| Fanatics may defend a point of view
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INTERNET: albert@harvard.edu	|			--Piet Hein