Date   : Sat, 09 Mar 2002 12:08:47 +0000
From   : Philip Peake <philipp@...>
Subject: Re: WD 1770

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.

Someone mentioned 1771s - I think these are rather more different, so are
pretty inadvisable as a replacement for a 1770.

Phil

Chris Johns wrote:

> > It might be cheaper to ask around for a faulty Master 128, ST or A3000
> > and nick the 1770 out of it.  Last radio rally I went to had used A3000s
> > selling for a tenner each, though it seems a shame to wreck a good
> > machine for one chip.
>
> Oddly enough, I have a dead A3000 motherboard here, which I am going to
> attempt to extract the 1770 from. the only problem is it's soldered in,
> so wether I can remove it without destroying it has yet to be seen.
>
> Cheers
>
> Chris
> --
> Chris Johns (cmj@...)