Date   : Mon, 12 Dec 1994 17:04:51 GMT
From   : David Alan Gilbert <gilbertd@...>
Subject: Re: MOS 1.20 versions

Dave Lodge wrote:

> The standard Beeb B one and the one used on later 8-bit acorn machines
> (ie the Elk and the Master) I don't know about the B+. The differences
> where miniscule, and I think covered fixed bugs and other things like
> that (that's how come the Elk is more closely related to the Master than
> the Beeb!)

Hmm. I don't think so - the Master is quite different in hardware terms.
There is support for second screen banks and the filing system workspace stuff.
The graphics support is also a lot more complex.  As for the electron
I was under the impression a LOT was done in software which is done in hardware
on the Beeb.  I don't think the OS can be similar.
Also the Master's OS presumably takes advantage of the extra instructions in the
cmos version of the 6502 used.

Dave (gilbertd@...)