Date   : Thu, 30 May 1996 12:12:35 +0200
From   : deweger@... (Mark de Weger)
Subject: FDCs and DFSs

Hi guys,

I have been offered a 1984 BBC with an Acorn 1770 FDC and DFS 2.23.

Before I decide to buy or not I'd like to know a couple of things:

- is the 1770 fully (upward) compatible with the 8271; if not,
  what are the differences? (in particular: can it read my 8271-
  formatted 80-track ds sd disks)

- what does the 1770 offer over the 8271? (in particular: does it
  allow you to format/write disks in dd format, which might
  enhance changes of my PC reading them using FDC or anadisk)?

- are there any major differences between DFS 2.23 and DFS 2.0
  (apart from the fact that DFS 2.0 works with the 8271 and
  DFS 2.23 works with the 1770)?

- is it possible to run ADFS (in sideways RAM) on a BBC in conjunction
  with the 1770?

Thanxalot in advance,
Mark.