Watford DDFS for BBC Master
I created 2 unauthorized versions of the Watford DDFS to work with
the BBC Master.
The first Watford DDFS
for the BBC Master merely addresses the difference in hardware
between the BBC Model B and the BBC Master.
second Watford DDFS for the BBC Master fixes some operability issues:
You don't actually need these changes, as the Watford DDFS allows
one to prefix its ROM commands with a letter 'O' to help avoid clashes.
So with the first ROM image above, the commands *OINFO and *OEDIT
can be used instead.
- The Watford DDFS may be selected by pressing "W-BREAK" rather
- The *INFO command has been renamed to *INFM, as *INFO is handled
by the MOS in the BBC Master and my patched Watford DDFS doesn't knit
into the Master well enough for *INFO to work - so the original
Watford *INFO command is made available as *INFM.
- The *EDIT command has been renamed *DZAP to avoid a clash with
the *EDIT command in the MOS.
It's probably advisable to *UNPLUG the Acorn DFS when using one
of these Watford DDFS ROMs in the BBC Master.