Newsgroups: comp.sys.amiga.hardware
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!bronze!greg
From: greg@bronze.ucs.indiana.edu (Gregory R. TRAVIS)
Subject: Re: A2091 conclusions
Message-ID: <1991Mar21.011911.5635@bronze.ucs.indiana.edu>
Organization: Indiana University
References: <18d500f6.ARN0f22@cbmami.UUCP>
Date: Thu, 21 Mar 91 01:19:11 GMT
Lines: 35

jason@cbmami.UUCP (Jason Goldberg) writes:

>Well, I have twice posted a letter stating that I am still having troubles
>with multiple Quantum drives on my all CBM equipted A2500, with reselection
>turned off on all drives, and proper termination.  I have the "A" WD chip and
>rev 5.92 ROMS.  I only asked if any of the CBM engineers thought I should 
>upgrade to the now available 6.1 ROMS, and if anyone is actively working on
>this problem.  If no one is I only want to know who I should write to, as none
>of the letters that myself and others have written have ever been replied to.



Jason (and others),

The A2091 with the 5.92 ROMS and WD "A" SCSI chip will not handle multiple
SCSI drives reliably.  The symptoms are, as you stated, intermittent
lockups which require a reboot.  Turning off reselection will NOT fix
the problem and DOES cause a significant performance hit.  Of course you
won't notice the performance hit if you DO turn off reselection because you
still won't be able to use more than one drive.  *sigh*

CBM has supposedly been working on this problem.  ROM version 6.6
is reputed to fix all the A2091 problems.  It is not available
at this time and no one seems to know when it will become available
to regular users.  There also seems to be a question as to who will have
to pay for the ROMs - CBM or the end user.  My A2091 just went out of
warranty this month and I've had the problem for (now) over a year.



--
Gregory R. Travis                Indiana University, Bloomington IN 47405
greg@cica.indiana.edu  		 Center for Innovative Computer Applications
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