Path: utzoo!utgpu!watmath!uunet!cs.utexas.edu!usc!apple!brutus.cs.uiuc.edu!tut.cis.ohio-state.edu!att!cbnewsc!psfales
From: psfales@cbnewsc.ATT.COM (Peter Fales)
Newsgroups: unix-pc.general
Subject: Re: Question about 3b1/7300 memory upgrade
Message-ID: <2097@cbnewsc.ATT.COM>
Date: 28 Jul 89 04:42:26 GMT
References: <774@galaxia.Newport.RI.US>
Organization: AT&T Bell Laboratories
Lines: 23

In article <774@galaxia.Newport.RI.US>, dave@galaxia.Newport.RI.US (David H. Brierley) writes:
> I have a machine with 1 meg of ram on the motherboard and I know that I can
> upgrade to 2 meg by filling in all the empty slots.

Well, if you are willing to trade some time for dollars, and feel 
comfortable with a soldering iron there is another alternative.  
One meg machines have room on the motherboard for 2 megs of RAM:  You
can upgrade for the price of 36 256K DRAM's and a few miscellaneous
components.  It does take a lot of time to remove the solder from
36*18 holes and then solder the chips in, but it works.  I did it
to my system, and posted the instructions to the a net a while back.

It turned out there are two styles of one meg boards.  One was designed
for one or two megs, the other was designed only for 512K or 2 meg, so
they had to put in some extra wires for the one meg system.  The former
is easier to upgrade, but I have some notes from someone who upgraded
the second style also.

-- 
Peter Fales			AT&T, Room 5B-420
				2000 N. Naperville Rd.
UUCP:	...att!peter.fales	Naperville, IL 60566
Domain: peter.fales@att.com	work:	(312) 979-8031