IBM 286 MB -- Putting Ram on it ** What are my OPTIONS?

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#10414

From: Mack Goodman
Date: Fri, 18 Dec 1992 14:28

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I have an old IBM Original 80286 AT Machine that I'm still using.  The 
motherboard has two banks of ram (bank 0 and bank 1) on it with each
bank having 18 sockets for the ram chips.  Currently it has piggyback
128k chips in each socket.  By piggyback, I mean there are two 128k chips
one on top of the other (I guess its another but I can't see the writing
to confirm it) with the legs actually soldiered together.  That piggyback 
chip is then placed in the mb ram socket.  Upon start up the POST shows 
the systems checking 512K of ram.  Also the J18 jumper on the motherboard 
is set to use both banks of memory according to a computer book that 
I have. (pins 1 & 2 are shorted together)

The question that I have is can this old mb memory be increased to say
640K or better yet 1 Meg of ram?  I have done the change of increasing 
the XT motherboards to 640K by replacing the old ram chips with 256K
ram chip in 2 of the 4 banks.  But I don't know if that same thing or 
something else can be done to get increased memory on the motherboard.

Any help/suggestions would be most appreciated.  Thanks in advance.

Nolan Shaver
nmshaver@cbda8.apgea.army.mil
410-838-0930 evenings are best
-- 
=============================================================================
+  Mack Goodman       an305 or mdgoodma@crdec8.apgea.army.mil               +
+  " Whether you think you can or you think you can't,                      +
+    You're right.                                                          +

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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!usenet.ins.cwru.edu!cleveland.Freenet.Edu!an305
From: an305@cleveland.Freenet.Edu (Mack Goodman)
Newsgroups: comp.sys.ibm.pc.misc
Subject: IBM 286 MB -- Putting Ram on it ** What are my OPTIONS?
Date: 18 Dec 1992 14:28:44 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Lines: 28
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Reply-To: an305@cleveland.Freenet.Edu (Mack Goodman)
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