Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!eru!luth!sunic!mcsun!unido!tub!tmpmbx!netmbx!hase
From: hase@netmbx.UUCP (Hartmut Semken)
Newsgroups: comp.sys.atari.st
Subject: Re: Hard disk - compiler woes.
Keywords: Help
Message-ID: <3407@netmbx.UUCP>
Date: 8 Sep 89 10:55:28 GMT
References: <2037@munnari.oz.au>
Reply-To: hase@netmbx.UUCP (Hartmut Semken)
Organization: netmbx Public Access Unix, Berlin, West Germany
Lines: 41

In article <2037@munnari.oz.au> rgg@uluru11.ecr.mu.oz (Rupert Graham GOLDIE) writes:
>	I have been using my 1040 (1986 vintage) with a SH205 hard disk and
[...]
>hard disk but still no luck. The only time I can get the compiler to work is
>from a ramdisk using floppies instead of the harddisk.

Sounds like a "lonely" DMA chip to me: the chip does not have the right
contact to its socket.

Maybe the cheap socket, Atari used, is getting old.

It's fixed easily: open Your computer (should not be too hard... the
thick one is the right end of the screwdriver :-), locate the DMA chip
(40 pin, 600 mil package, in socket, close to the harddisk connector and
floppy controller), pull it out (a Swiss army pocket knife blade is just
under 600 mils wide; works perfectly; long live Mac Gyver!) and put it
back in.

If the problem persists, get a gold plated "precision" socket (the
expensive type) and plug it between the chip and the original socket:
the gold plated pins of the socet are more wide than IC pins and
therefore issue more pressure to the old socket; gives better contact.

If the problem still persists, pull out MCU and GLUE (the 68 pin PLCC
chips) and push them back. There sockets can also cause trouble.

(If the problem still is there: call Your dealer or wait for a cheap
used ST show up; they already do here; a lot of STe's are beeing
ordered...)


I had similiar trouble and solved it by replacing all cheap sockets.

My (much hacked) 1985 520ST+ still works perfectly...

hase
-- 
Hartmut Semken, Lupsteiner Weg 67, 1000 Berlin 37 hase@netmbx.UUCP
Dennis had stepped up into the top seat whet its founder had died of a
lethal overdose of brick wall, taken while under the influence of a
Ferrari and a bottle of tequila. (Douglas Adams; the long dark teatime...)