Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!rutgers!att!cbnewse!rtb89
From: rtb89@cbnewse.ATT.COM (roy.t.bradstrum)
Newsgroups: comp.os.os2
Subject: Re: MAJOR DISASTATER !!!
Summary: check memory & bus speed
Message-ID: <13395@cbnewse.ATT.COM>
Date: 6 Mar 90 13:50:24 GMT
References: <791@sce.carleton.ca>
Organization: AT&T Bell Laboratories
Lines: 34

In article <791@sce.carleton.ca>, ajai@sce.carleton.ca (Ajai Sehgal) writes:
> OK I really blew it this time. I upgraded my system to a 20MHz 80386 with an
> 80387, AMI Bios dated 9-15-89, CHips & T chipset. I still have an ATI VGA
> Wonder with 512K, Miniscribe 3035 with Western Digital Controler. 
> OS/2 1.2 no longer works!

> Can anyone suggest a solution.
> Ajai

I have run across two problems in my limited experience of installing
OS/2 on non-IBM machines.

Make sure that your memory above 640K is extended and not expanded.
This sounds really elementary but there was nothing about memory
setup in either my 1.1 or 1.2 documentation and it tripped me up
on my first attempt to install OS/2.

Since you have a new motherboard find out the speed of the
bus. If it is not 8mhz you may have an incompatibility with
your graphics card. I have a friend who had a 10mhz bus motherboard
which worked fine with his VGA card in DOS but would not work in OS/2.
He was able to slow the bus dowm to 5mhz and everything
worked fine.

The symptoms you described sound more like this problem than
the memory problem.

Hope this helps, I have heard a lot about incompatabilities with
hard drive controllers and OS/2 but since you are keeping the
same hard drive controller this shouldn't be the problem.

Todd Bradstrum
AT&T Technologies
Naperville IL.