Date   : Tue, 21 Jun 2005 23:21:12 +0100
From   : Mike Tomlinson <mike@...>
Subject: Re: Watford Electronics DFS

In article <4d7ea8dffbBBCmail@...>, Ian K <BBCmail@...>
writes
>In article
><E14E4ED61DD1D41195B70002A52C476D111A9832@...>,
>   Littlefield Aaron <CALITTLEFIEL@...> wrote:
>
>> Hi,
>
>> Purely for arguments sake, if I had a BBC Micro with a Watford
>> Electronics DFS fitted and wanted to swop this for the Acorn 1770DFS,
>> what would I need to change or remove?
>
>From memory you should just need to swop the rom unless it is an earley
>version of the Watford DFS.

Er, no.  Watford DFS is 8271 based; it's a staright swap for the Acorn
DFS 0.90 or DNFS 1.20 rom.

Therefore if the OP wants to remove a Watford [8271] DFS and fit the
Acorn 1770 DFS, he needs to follow the instructions in the 1770 upgrade
as if he were upgrading from the Acorn 8271 DFS.   Essentially; remove
DFS ROM and 8271.  Fit 1770 module and links as necessary. Fit 1770 DFS
ROM.  Enjoy.

Mike