4 MB SIMMs in 386/25 motherboard

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Article #177

#177

From: Dick O'Connor
Date: Mon, 31 Aug 1992 21:16

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I wanted to add 4 MB of memory to a Z386/33 EISA machine, so I bought a
4MB SIMM (ZA3800MK) from LA Trade and it worked.  I wanted to add 4 MB
of memory to a Z386/25, so I bought the same piece and it worked.  Great!

Now I want to add 4 MB to a Z386/25 that came from a Z286 with the Hug 
386/25 motherboard upgrade added.  But that same piece isn't recognized 
by this machine.  In fact, we upgraded two machines in this way, and
neither of two distinct pieces (SIMMs) are recognized by either machine.

I smell an incompatibility problem.  Or a jumper I don't know about?  The
hardware manual included with the upgrade just says to put either 1MB or
4MB SIMMs in the first open slot.  No help there.  Has anyone figured out
how to do this properly or have any further info that might help?

"Moby" Dick O'Connor                         djo7613@u.washington.edu 
Washington Department of Fisheries           *I brake for salmonids* 
-- 
"Moby" Dick O'Connor                         djo7613@u.washington.edu 
Washington Department of Fisheries           *I brake for salmonids*

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From: djo7613@hardy.u.washington.edu (Dick O'Connor)
Newsgroups: comp.sys.zenith
Subject: 4 MB SIMMs in 386/25 motherboard
Keywords: 4MB SIMMs, 386/25, upgrade
Message-ID: <1992Aug31.211644.27931@u.washington.edu>
Date: 31 Aug 92 21:16:44 GMT
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Organization: University of Washington
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