Date   : Sat, 09 Mar 2002 13:03:27 +0000
From   : "Dr. David Alan Gilbert" <gilbertd@...>
Subject: Re: WD 1770

* Philip Peake (philipp@...) wrote:
> The A3000 & Master Compact both have 1772s in them, not 1770s. The only
> substantial difference is the step rate, which in the 1772 is optimised for
> 3.5" drives, so you might have some problems if you try to connect a 5.25"
> drive through a 1772 (unreliabilty problems- it would probably still work). I
> would also have thought that the DFS/ADFS software needs tweaking for use
> with a 1772.

Well in particular the step timing is different.  I'm not aware of any
other differences (I think the Master had either 1770 or 1772 depending
on random events...).  For example a 1772 won't even budge our old full
height 5.25" drives; it should be OK with a relatively modern 5.25" drive.

Dave
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