Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!umich!samsung!zaphod.mps.ohio-state.edu!mips!prls!pyramid!infmx!aland
From: aland@infmx.UUCP (Dr. Scump)
Newsgroups: comp.sys.att
Subject: AT&T 6386 Expansion memory boards   (argh!)
Message-ID: <3701@infmx.UUCP>
Date: 27 Mar 90 01:11:24 GMT
Reply-To: aland@infmx.UUCP (alan denney)
Distribution: na
Organization: INFORMIX Professional Services ("Peace thru Normalization")
Lines: 33

Does anybody have info regarding the memory address map for the socket
on AT&T's "4/16 MB Memory Expansion Board" (PE Code 37337, Comcode
406130534).  What I need is something that will tell me for any
given address, which SIMM does it reside in by socket # and column #.

There is no such documentation with the board.  The machine manual
documents the WRONG BOARD, as I mentioned in prior postings.  Two
calls to the hotline to find out this addressing info has produced
two different answers, both of which have proven to be *wrong*.

Right now, whenever I get an address problem, I have to swap SIMMS
around in an attempt to isolate which socket is the problem. Since
the POST messages typically give the wrong address (or none at all --
sometimes it just stops scanning at a MB boundary with no messages),
this becomes a real adventure.

For example, right now I am confident that the 4th MB is U24 Left
and that U26 Right is the 7th or 8th MB of board addresses...

If some kind soul within AT&T who has access to this info would
care to email/fax or whatever, I'd really appreciate it.  Each
memory error is costing me ~4 hours to isolate...  Email address
below, fax number (415) 926-6872.  Thanks in advance.

--
Alan S. Denney # Informix # aland@informix.com # {pyramid|uunet}!infmx!aland
 CAUTION: Objects in terminal are closer than they appear...
 Disclaimer: These opinions are mine alone.  If I am caught or killed,
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