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Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!agate!garnet.berkeley.edu!ohst-ag
From: ohst-ag@garnet.berkeley.edu
Newsgroups: comp.sys.ibm.pc,comp.sources.wanted
Subject: Re: Information Wanted on PC-1
Keywords: Wanted,PC,PC-1,HELP!!!
Message-ID: <11057@agate.BERKELEY.EDU>
Date: 17 Jun 88 19:07:38 GMT
References: <59@iisat.UUCP> <745@taux01.UUCP>
Sender: usenet@agate.BERKELEY.EDU
Organization: Office for History of Science, U.C. Berkeley
Lines: 16

In article <745@taux01.UUCP> cjosta@taux01.UUCP (Jon Sweedler) writes:
>In article <59@iisat.UUCP> brentn@iisat.UUCP (Brent Newsome) writes:
>>I desperately need any information that I can get on IBM's PC-1 computer.
>>
>>		B) How much memory will it hold maximum / minimum
>There are two motherboards.  The revision A (the original one) could only
>hold 64k.  Revision B can hold up to 256k.  But regardless of the motherboard,
>the machine can be expanded with cards up to 640k.  I suppose the minimum
>configuration is 64k since I never heard of any machine with less than this.

One important exception: some of the OLD PC-1s with the 64K motherboard also
have a very old BIOS that will allow DOS to address only 544K of RAM.  I
happen to own one of these little gems and have never bothered to replace
the BIOS to get up to 640.

Timothy Moy
ohst-ag@garnet.berkeley.edu