Rodime 552 drive interface?

From: Mark Tapley <mtapley_at_swri.edu>
Date: Tue Jun 24 15:50:01 2003

All,
        a friend of mine had a question this group is probably best to answer:

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I am trying to determine the type of interface on an old Rodime 552
drive. It has 26 pins. SCSI has 50. IDE has 40. The old MFM
used two cables, not one so I don't think it's MFM. I did find a
listing for it at one of the surplus places in a table which lists
interfaces, but all it said was "26 pin". I'm trying to figure
out if the thing is actually one of the more common interfaces with a
funny connector--perhaps all the GND pins have been combined into one
reducing the pin count.

This model of drive is found in the old Apple Hard Disk 20, which was
the ancient floppy drive interface external hard drive used on Mac
128Ks and 512Ks before the Plus with SCSI came out.
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        any help for him? Thanks in advance,
                                                        - Mark
Received on Tue Jun 24 2003 - 15:50:01 BST