Re: HELP! OS/2 no-go after board upgrade

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Article #16760

#16760

From: Joe Morris
Date: Wed, 27 Jan 1993 16:32

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rm113@cus.cam.ac.uk (R. Moss-Eccardt) writes:

>In article <1993Jan26.170130.25555@midway.uchicago.edu> sip1@midway.uchicago.edu writes:

>>It's in the FAQ List (of course).  :-)  "TRAP 0002" means bad RAM --
>>the RAM is probably too slow for your system.  Increase the wait
>>states in the setup, precharge cycles, etc., and see if that clears up
>>the problem.

>To be rather pedantic, it doesn't just mean 'bad RAM'.  We get TRAP 0002s
>on PS/2 70-121s because they have a slightly older processor module.  IBM
>have an Engineering Change available for such machines.  

Can you tell us how to identify the 70-121 units which are in need of the
EC?  I'm running an evaluation of OS/2 using a -121, although most of its
use is under DOS (via dual boot).  I haven't run into a 0002 and would
prefer to avoid it if possible.

(I don't even know the vintage of the motherboard.  The box got a new
(or more properly, refurbished) system board a few years ago after
the onboard async adapter died.)

Joe Morris

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References: <1993Jan25.193345.1@vax1.umkc.edu> <1993Jan26.170130.25555@midway.uchicago.edu> <1993Jan27.140243.900@infodev.cam.ac.uk>

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From: jcmorris@mwunix.mitre.org (Joe Morris)
Subject: Re: HELP! OS/2 no-go after board upgrade
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References: <1993Jan25.193345.1@vax1.umkc.edu> <1993Jan26.170130.25555@midway.uchicago.edu> <1993Jan27.140243.900@infodev.cam.ac.uk>
Date: Wed, 27 Jan 1993 16:32:22 GMT
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