Date   : Sun, 04 Feb 2001 15:03:31 +0000
From   : jgh@... (Jonathan Graham Harston)
Subject: Re: second processor pictures

"Michael Borcherds" <mrb@...> wrote:
> > The Arm Evaluation Kit, was a second processor upgrade for the BBC.
> > (There is no emulation about it, it is all the real thing)
> 
> It was my understanding that there was *also* an ARM emulator that ran on
> the 6502 2nd processor (presumably prior to the hardware!).
> Anyone else know anything about this? (or have a copy :)
 
Yes, this existed.  It was from this emulation that the designers worked
out that the ARM architecture design would run so fast and efficiently
that persuaded higher-ups in Acorn to give them to go-ahead to fabricate
some real silicon.
 
I haven't got a copy of the original, but it shouldn't be hard to write
one.  The ARM's instruction set is so wonderfully orthogonal, it can even
be done in Basic.
 
-- 
J.G.Harston (JGH BBC PD Library) 70 Camm Street, Walkley, SHEFFIELD S6 3TR
jgh@...                - Running on BBCs & Masters with SJ MDFS FileServer
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                             Et In Arcadia Ego