Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!brunix!rjd
From: rjd@cs.brown.edu (Rob Demillo)
Newsgroups: comp.sys.ibm.pc
Subject: Re: yo mother
Message-ID: <24217@brunix.UUCP>
Date: 4 Jan 90 17:54:38 GMT
References: <20726@kuhub.cc.ukans.edu> <2500@jato.Jpl.Nasa.Gov>
Sender: news@brunix.UUCP
Reply-To: rjd@cs.brown.edu (Rob Demillo)
Organization: Brown University Department of Computer Science
Lines: 42

In article <2500@jato.Jpl.Nasa.Gov| kaleb@mars.UUCP (Kaleb Keithley) writes:
|In article  ARRITT@kuhub.cc.ukans.edu  writes:
||I've seen some discussions in this group about replacing motherboards.
|
||My question is: what is involved in replacing the motherboard?
||
|If you can put in a disk drive, then you can probably handle a motherboard;
|just be carefull, static can destroy CMOS parts on a motherboard faster than
|you can take it out of its static protective bag...
|
||Also, how well do these things match up, physically?  Will a "typical" 
||286 motherboard fit into a "typical" XT-clone case, without a lot of 
||drilling into metal and so forth?
||
|What you need is a so called Baby AT motherboard.  This will fit in your XT
|case, but, things like the turbo switch, keylock, speaker, etc (if your XT
|has them) will not "just plug in".

Just an additional note here. 

For those of us who have one of the old IBM "Portable PC's"...

The motherboard on the PPC is an XT board. I purchased a 286
'drop in' replacement board for an XT, and I was able to wedge it
in just fine. (The PPC has a 200 watt power supply, so they were
planning for something, at least.)

In addition, the PPCcan have a hard disk...I took a Seagate
drive (intended for use as an internal drive), extended the
cabling and made an external box for it with a fan. 

The whole configuration is working just fine...

(of course, I'm now in the mood for something bigger and faster,
but I don't think I'll try upgrading the mother board a second
time...give's me the willies... :) )


 - Rob DeMillo			| Internet: rjd@brown.cs.edu     
   Brown University 		| BITnet: DEMILLO%BRNPSG.SPAN@STAR.STANFORD.EDU
   Planetary Science Group	| Reality: 401-273-0804 (home)
"I say you *are* the Messiah, Lord! And I ought to know, I've followed a few!"