ST-225 help needed

From: Ethan Dicks <>
Date: Tue Jul 23 16:40:01 2002

--- Sipke de Wal <> wrote:
> IRCC the 34-pin controller cable had no twist
> and each drive had its own datacable (20-pin)

In PeeCees with Western Digital controllers, a twist
on the 34-pin daisy-chain cable was common, but as
has been mentioned, it is not the same twist that was
used for floppies.

If you strap the drives for 0 and 1, you don't
need/want the twist. Most PeeCees had both drives
strapped to 1 and the twist turned the farthest
drive to "0".

One or the other, but not both.


P.S. - DEC, of course, did it differently... it's
entirely possible to hose yourself by moving ST506/ST412
drives from PeeCees onto an RQDX3 without moving
any jumpers - unlike a PeeCee, the RQDX can blow away
critial portions of the lower tracks if you have two
drives responding to the same select - the hardware
is fine, but you'll have to reprep the drive. I'm
pretty sure I've done this to myself at least once.

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Received on Tue Jul 23 2002 - 16:40:01 BST

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