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From: withers@nitmoi.enet.dec.com (George Withers)
Newsgroups: comp.sys.amiga.hardware
Subject: Problem with ASDG memory in A2000 w/ A2090A
Message-ID: <21002@shlump.nac.dec.com>
Date: 12 Mar 91 13:31:55 GMT
Sender: newsdaemon@shlump.nac.dec.com
Reply-To: withers@nitmoi.enet.dec.com (George Withers)
Organization: Digital Equipment Corporation, Acton MA
Lines: 31

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I recently purchased an ASDG/Micron 2Mb memory board and
installed it in my A2000 (old Agnus, rev 4.4 motherboard, A2090A
SCSI controller).  It procededed to trash a partition of my drive
when it was accessed even though the memory was there according
to AVAIL.

I was told by someone that the same thing happened to them on
a Rev 4.3 motherboard and that they had to do the "pull-up U605"
fix given in "The Flake Report".  When I told them I had the faster
U605/U602 buffer chips (74ALSmumble) they said that should have
fixed it.

So, can someone give me an idea of what I can do?  The person who
had the problem before says it happened consistently to him on
DMA's from memory to disk.  That would jibe with what I was doing
as it crashed running PasTeX, where PasTeX was reconfigured to
be using large amounts of memory.

Thanks in advance for any and all help,

George

        ---------------------------------------------------------------
 George Withers, Jr.                      | "There is no life I know to compare
 Digital Equipment Corp., 97 Piper Road   |  with pure imagination.  Living
 Acton, MA   01720   AT&T: 508.264.2339   |  there you'll be free .. if you 
 Addr: withers@nitmoi.enet.dec.com        |  truly wish to be."  - W. Wonka
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