-----Original Message-----
From: Compact Macs [mailto:[EMAIL PROTECTED] Behalf Of
Dan Knight
Sent: Wednesday, June 25, 2003 7:59 PM
To: Compact Macs
Subject: Re: Apple Hard Disk 20 followup


  None of the chips on the controller card are
>clearly SCSI nor IDE controller chips.

>>The Apple HD 20 predates the SCSI specification and IDE, so there's no
>>way it could be either. In those days, most drives were MFM or RLR, and a
>>lot of them still used proprietary connectors. This drive could be unique
>>to the HD 20.

The HD 20 actually used a modified MFM drive. It was designed to run off a
34 pin
floppy connector. The older drives, MFM and RLL both used a 34 pin edge
connector
plus a second cable (or third if you count power). It will not work with IDE
or SCSI.


--
Dan Knight, president, Cobweb Publishing, Inc.
 <http://cobwebpublishing.com> <http://lowendmac.com>
 <http://digital-views.com> <http://digigraphica.com>
 <http://lowendpc.com>          <http://reformed.net>

I was to learn later in life that we tend to meet any new situation by
reorganizing, and what a wonderful method it can be  for creating the
illusion of progress while producing confusion, inefficiency, and
demoralization. -- Petronius


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