Path: utzoo!attcan!uunet!snorkelwacker!apple!oliveb!tymix!hobbes!pnelson
From: pnelson@hobbes.uucp (Phil Nelson)
Newsgroups: comp.sys.amiga
Subject: Re: QA at C=
Summary: fix exists for 2 drives on 2091
Message-ID: <3618@tymix.UUCP>
Date: 27 May 90 18:44:41 GMT
References: <1131@cica.cica.indiana.edu>
Sender: usenet@tymix.UUCP
Reply-To: pnelson@hobbes.UUCP (Phil Nelson)
Organization: BT Tymnet, Inc. / San Jose, CA
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In article <1131@cica.cica.indiana.edu> greg@cica.indiana.edu (Gregory TRAVIS) writes:
>
>Yes, I believe that C= does have a serious quality control problem.  My

 ...broken shock mounts, wired crossed...

>My second 2500 only has the problem that the 2091 cannot handle ANY but the
>slowest drives in addition to the internal quantum.  From experiments that
>I've done with my 2091 and those of friends or the workplace determines that,
>for all intents and purposes, the 2091 (Rev 4.0 MODIFIED) is a single-drive
>controller.  It simply cannot handle any of the modern large drives
>(Maxtor/CDC Wren/Miniscribe have ALL been tried) if you have another drive
>also connected to it.  Perhaps that's the "engineering hold" people have been
>talking about for the 2091, but this really should have been caught at QA,
>AT LEAST.  Since I cannot run other processes that might go for a drive
>other than the one I am currently using (or risk locking up the system)
>I cannot multitask on my Amiga.

 I am running 2 Quantums on a 2091 without any lockups. I was not able to
run a Conner Cp340 as a 2nd drive without experiencing lockups. The Conner
would run perfectly as the only drive on the controller, but as the 2nd
drive I had the symptoms you describe. I had some communication from
Comodore tech support about this, apparently they have had lockups with
2 Quantums with 2091s with a particular type of WD chip. I think they are
working on some sort of patch, what I did was replace the WD controller.

 You will probably hear from someone at Commodore on this, I did. If not,
mail me, I can look up the details.

>greg@cica.cica.indiana.edu       Center for Innovative Computer Applications


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