On 18/01/2011 02:37, Harold Hallikainen wrote:
> Was that Motorola? I thought it was Mostek or something like that. I
> remember they did the 6500 series (6502 processor, 6522 versatile
> interface adapter, 6551 (I think) programmable uart, etc.). Motorola did
> the 6800 series. I used the MC6802, which was a 6800 with internal clock
> (just add a crystal) an 128 bytes of RAM. I think they had some designers
> in common. I think I recall the 6800 was first, then some people went off
> to do the 6502. The big difference I remember was the 6502 had two index
> registers, while the 6800 had just one. I think the 6502 had 8 bit index
> registers, while the 6800 had a 16 bit index register. I think the 6800
> had two accumulators and the 6502 had just one. The 6502 was used in the
> Apple II, the VIC 20, Commodore 64, etc.
>
> Harold
>
>
> FCC Rules Updated Daily at http://www.hallikainen.com - Advertising
> opportunities available!

The ARM RISC was inspired by 6502  and Largely designed by Wilson, (ARM=20
was Acorn then, that had made the 6502 based BBC Micro)

The /Acorn Business Computer/ (ABC) plan required a number of second=20
processors to be made to work with the BBC Micro platform, but=20
processors such as the Motorola 68000 and National Semiconductor 32016=20
were unsuitable, and the 6502 was not powerful enough for a graphics=20
based user interface.

Acorn would need a new architecture, having tested all of the available=20
processors and found them wanting. Acorn then seriously considered=20
designing its own processor, and their engineers came across papers on=20
the Berkeley RISC project. They felt it showed that if a class of=20
graduate students could create a competitive 32-bit processor, then=20
Acorn would have no problem. A trip to the Western Design Center in=20
Phoenix showed Acorn engineers Steve Furber and Sophie Wilson that they=20
did not need massive resources and state-of-the-art R&D facilities.

http://en.wikipedia.org/wiki/ARM_architecture


I have the 1987 Acorn User Magazine with Archimedes on front cover.

http://en.wikipedia.org/wiki/Acorn_Archimedes

BUT

I'm dubious as to the value of a 6502 silicon simulator in HTML5 other=20
than a proof of concept of some kind.
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.