Stack Machines

[dwight elvey]

>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")
>
>               -Dave
>
>--
>Dave McGuire
>Cape Coral, FL
>

Hi Dave
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.
Dwight

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