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From: johnl@godot.UUCP
Newsgroups: net.micro.pc
Subject: PC AT and old serial cards
Message-ID: <427@ima.UUCP>
Date: Fri, 12-Oct-84 10:45:54 EDT
Article-I.D.: ima.427
Posted: Fri Oct 12 10:45:54 1984
Date-Received: Mon, 15-Oct-84 01:51:17 EDT
Lines: 0
Nf-ID: #N:ima:12700003:000:388
Nf-From: ima!johnl    Oct 12 10:27:00 1984

I tried putting an old serial card (the kind with a real DB25, that everybody
seems to have closets full of) into my PC-AT, and like IBM said, it didn't
work.  But then a friend at IBM told me to pull of the undocumented jumper
J1 in the middle of the serial card, and now it works fine on an AT.  Hmmn.
Sure was easier than soldering together a new serial cable.

John Levine, ima!johnl