Ancient disk controllers - test-drb@ccmp.vtda.org

18 Apr 1999

--- Tony Duell &lt;ard(a)p850ug1.demon.co.uk&gt; wrote:
...
    Which pins are used on the 50 pin connector? Could it
be pinned out as a 
 SCSI port. Or is it possibly some custom host interface?  
 It could be a custom host interface.  Among other anomalies, I don't see
 any terminating resistors.  
 Doesn't sound like SCSI/SASI, then...

  Can you scan that data sheet or send me a
photocopy?  I'd pay for
 copying/mailing.  
 Sure, but from what others have said, I don't think it'll be a lot of use 
 to you. 
Well... does anyone need this?  I happen to have the enclosure that goes
with it too.  It says "Davong" on the outside and has a one-piece lid with
broad, rounded corners, not boxy.

...
    20MHz/4 = 5MHz = standard ST506 data rate.   
 Right.  It's the right rate for an 8" disk.  
 Is it? I thought the 8" winchesters had a 4.34MHz data rate. 
To repeat myself, that's a typo.  I meant to say "...not the right
rate...".
Mea culpa.

If anyone can put this to use, let me know.  I can't imagine anything I'll
own in the near future that needs it.

-ethan

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