Path: utzoo!utgpu!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
Subject: Re: Switching A SS drive to DS
Keywords: Help me, Please...
Message-ID: <1991Mar29.142208.17661@actrix.gen.nz>
Date: 29 Mar 91 14:22:08 GMT
References: <8889@mentor.cc.purdue.edu>
Sender: Roger.Sheppard@actrix.gen.nz (Roger Sheppard)
Organization: Actrix Information Exchange, Wellington, New Zealand
Lines: 22
Comment-To: stevendd@sage.cc.purdue.edu

Distribution:world 

In article <8889@mentor.cc.purdue.edu> stevendd@sage.cc.purdue.edu (Doug Stevens) writes:
> I finally desided to upgrade my single sided drive, I just got the new drive
> today.  I thought all I had to was swap drives.  The plug from the small board
> in the drive case isn't the same as the one one the drive.  The connector on the
> board is for 14 pins, the drive connector is 34 pins.  I rember reading some of
> the early single sided drives used an old kind of connector (guess what kind I
> got).  If you know how to convert the plugs I would be very appreciative.
> 
> Thanks.
> - Doug


Well you will find a small PCB with a CPU fitted on it, all this has
to be removed, and you relace this with the 34 IDC connector,
this CPU was a Atari copout for some drive that stept at 6 ms, the CPU
take the Atari 3 ms , step pulses and buffers things up and gives out
6 ms step pulses, Note, one other feature is that you can't go over
80 tracks with this CPU fitted, and there is no side select fitted
either.
So remove the lot, and wire the 34 pin connector to the Main PCB...
-- 
Roger W. Sheppard   85 Donovan Rd, Kapiti New Zealand...