Help needed with mixed 1 and 4 MB SIMMS

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#2070

From: Alex Woo RAA
Date: Thu, 13 Aug 1992 22:14

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According to the FAQ, it appeared that I could upgrade my
25MHz NeXTStation by replacing banks 0-3 of SAMSUNG KMM581000A-10
SIMMS with Goldstar 4x8 60ns SIMMS.  Unfortunately, my
machine doesn't recognize these and reports mixed memory
and then claims that banks 0-3 are unpopulated.  Any clues?

Would it work if I removed the rest of the SAMSUNG's and used
memory which was all 60ns.  Seems strange that the memory won't
respond to the slower refresh rate.

Alex
========================================================================
Alex Woo, MS 227-6                         woo@ames.arc.nasa.gov
NASA Ames Research Center           __o    NASAMAIL      ACWOO
Moffett Field, CA 94035-1000       -\<,    SPANET        24582::WOO
(415) 604-6010 (FAX) 604-4357 .....O/ O   {hplabs,decwrl,uunet}!ames!woo
========================================================================
Disclaimer: These comments are not official statements of NASA or EMCC.
========================================================================

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Message-ID: <1992Aug13.221432.1145@riacs.edu>

Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!ames!riacs!pioneer.arc.nasa.gov!woo

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Newsgroups: comp.sys.next.misc,comp.sys.next.hardware
Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!ames!riacs!pioneer.arc.nasa.gov!woo
From: woo@pioneer.arc.nasa.gov (Alex Woo RAA)
Subject: Help needed with mixed 1 and 4 MB SIMMS
Message-ID: <1992Aug13.221432.1145@riacs.edu>
Summary: 25MHz NeXTstation doesn't recognize 4MB SIMMS
Sender: news@riacs.edu
Organization: NASA Ames Res. Ctr. Mtn Vw CA 94035
Date: Thu, 13 Aug 92 22:14:32 GMT
Lines: 20