🚀 go-pugleaf

In article <01bd05cd$e2751380$0100b51f@dbqa.demon.co.uk>, Tom Bird
<hamster@nospam.demon.co.uk> writes
>Bob Goddard <Bob@nospam.demon.co.uk> wrote in article
><$XA1cBAjamj0EwWU@godwit.demon.co.uk>...
>> In article <348D7191.3866@powernethk.com>, hitalent
>> <hitalent@powernethk.com> writes
>> >
>> >the problem is Seagate ST-3XXX is a 5V TTL bus control
>> >TX is 3.3V TTL bus control interface, other is not.
>> >so some TX mother-board turn VIO to 3.45 or above
>> 
>> This is a bit misleading - ST3XXX indicates any Seagate drive in the
>> 3.5" x 1" height form factor, including current models which are OK on
>> 3.3V. In my experience, ST5XXX models can also be affected.
>
>No.  I have a ST51080A next door and that's almost as small as a PCMCIA
>drive.  Very flat and not very long but full 3.5" width and 1.00Gb of
>blisteringly fast space.

I know it well - I've got one in this HX machine alongside its bigger
brother, the ST52520A. Until a couple of weeks ago I was working for a
well-known PC supplier, building and setting up their machines. I can
assure you that the ST52520A exhibited just the same symptoms as other
non-TX-compatible Seagate drives when we attempted to set one up on a
DFI TX motherboard. By this time the ST52520A was becoming few and far
between in any case and the ST32531A was definitley a no-no, so we had
to settle for using alternative makes until Seagate had sorted
themselves out.

Maybe the ST51080A isn't affected, or more likely you were just plain
lucky with a combination of individual drive, motherboard and PSU where
the tolerances were favourable - it's certainly a very knife-edge thing.

Bob
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