dkelvey at hotmail.com
Mon Oct 23 09:55:34 CDT 2006
>From: Dave McGuire <mcguire at neurotica.com>
>On Oct 22, 2006, at 7:10 PM, dwight elvey wrote:
>>Over the years, several machines have been created that ran quite
>>fast. A variation of the NC4000 made by Rockwell ( I think called the
>>RT2000 ) was often used on DSP excelerator cards.
> RT2000...Do you mean the RTX2000, by Harris? Wow...Novix NC4000 and
>Harris RTX2000...damn fine Forth chips. I'd sure like to see a Verilog
>implementation of one of those designs. (well, less "see" and more
>"compile, burn into a config PROM, and hack on")
>Cape Coral, FL
Yes, I mean Harris RTX2000. A little brain fade.
I have a NC4000 on a delta board. I made a few changes.
It now has a shadowed boot ROM and I have both hard and
floppy drives connected.
Chuck is right that vector math is a little difficult to do efficiently.
It is just that most stack machines have been implemented as
simple stacks. This is mostly to keep them small and fast otherwise.
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