RE: IBM PC-XT RAM Chips?

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Article #438

#438

From: Rick Beebe
Date: Thu, 01 Nov 1990 16:53

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>From: Rob Caton <C08926RC@WUVMD.Wustl.Edu>
>
>I recently required a genuine IBM XT motherboard with 0k.  The date on the
>BIOS chip is 1986 and elsewhere on the board it says 256 - 640k.  My question
>is twofold:  can this board be populated with 640k using 256x1 and 64x1
>chips, and if so, what are the proper dipswitch settings?
 
The answer is Yes and I don't know. Sorry. Near the end of their life, IBM 
switched to a 640K motherboard for XT's. I myself have only seen one, and I'm 
afraid I don't have any docs on them. Your service rep (who said all true IBM XT
    
boards have 256 - 64k written on them) has probably never seen one.
 
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                                Rick Beebe                    (203) 785-4566
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From: BEEBE@YALEMED.BITNET (Rick Beebe)
Newsgroups: comp.sys.misc
Subject: RE: IBM PC-XT RAM Chips?
Message-ID: <0F0773BBD41F000126@Venus.YCC.Yale.Edu>
Date: 1 Nov 90 16:53:00 GMT
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