Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!waikato.ac.nz!comp.vuw.ac.nz!actrix!Roger.Sheppard
From: Roger.Sheppard@bbs.actrix.gen.nz
Newsgroups: comp.sys.atari.st.tech
Subject: Re: 520stfm upgrade?
Keywords: partition sector 0 hard disk
Message-ID: <1991Mar09.123133.15161@actrix.gen.nz>
Date: 9 Mar 91 12:31:33 GMT
References: <5208@mcrware.UUCP> <1991Mar7.051042.6372@nmt.edu>
Sender: Roger.Sheppard@actrix.gen.nz (Roger Sheppard)
Organization: Actrix Information Exchange, Wellington, New Zealand
Lines: 17
Comment-To: eahsnsr@nmt.edu

Distribution:world 

In article <1991Mar7.051042.6372@nmt.edu> eahsnsr@nmt.edu (Eric A. Hobbs) writes:
> 
> I'm really sick of only having 512K and since buying a new computer
> OK, I have a Rev. C 520stfm motherboard. In the place where the RAM
> chips are, there are a series of empty holes where, I assume, the extra
> .5 meg in a 1040 goes. In order to upgrade, could I just simply
> solder in the 8(?) memory chips with no other mods, or is there some
> trick to it?
> 
> Eric A. HOBBS!
> eahsnsr@JUPITER.nmt.edu

No. you solder in 16 256k Rams 150ns or better, plus 3 resistors 33/39 ohms
and 16 * 0.22uf mono caps, you can see the missing resistors, they are
in the same place as the otheres..
-- 
Roger W. Sheppard   85 Donovan Rd, Kapiti New Zealand...