Date   : Mon, 15 Sep 2008 21:09:03 +0100
From   : afra@... (Phill Harvey-Smith)
Subject: Sideways RAM rom ?

Hopefully this one will go to the list.....

Michael Firth wrote:
[Snip, my original post]
> The later standard was to use the Acorn 1770 DFS which came with a
> set of SRAM commands, and which was also the provided way to load the
> SRAM on the Master.

Yeah I noticed that, I've been using the master to verify that my DFS
disk writing program was working, by writing a rom and loading it into
the SRAM, I believe the B+ also has it doesn't it ?

> I've just uploaded the Utilities ROM I mentioned in another post to 
> http://www.firths.org/bbc/UtilsROM, this ROM allows the use of the
> SRAM commands on a machine that doesn't have the 1770 DFS installed.
> It does, however, increase PAGE by &200.

Cheers, that seems to work and do what I need now, and I've just 
finished dhaking the bugs out of the hardware, so now have a machine 
with 8 sram banks 0..7, and 8 ROM banks 8..15, guess batter backup will 
be the next step  :)

Cheers.

Phill.

-- 
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !

"You can twist perceptions, but reality won't budge" -- Rush.