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From: keithb@hemel.bull.co.uk (Keith Bedford)
Newsgroups: comp.sys.atari.st
Subject: Re: Switching A SS drive to DS
Keywords: Help me, Please...
Message-ID: <1991Apr2.120404.1792@hemel.bull.co.uk>
Date: 2 Apr 91 12:04:04 GMT
References: <8889@mentor.cc.purdue.edu>
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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.

I recently upgraded a 520 STFM to a D/S drive.  The 14-pin connector comes off
a small (aprox 3" by 3") pcb that is no longer required - unscrew the pcb and
you should find a 34-pin connector going into it.  Disconnect the small pcb and
the free cable SHOULD now connect straight to your new drive.  I had to twist 
the cable through 90 degrees to get the right polarity, if you get it wrong
the drive light will stay on permanently but do no damage.
The pcb is no longer required and can be stored/junked with the SS drive.

This worked for me, I can't guarantee it will work for you.  If your ST goes
into orbit when you switch on I'm real sorry but it's not my fault.

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