Very cool!
--tom
At 10:23 PM 8/27/2004 -0400, you wrote:
> >You would get the 2 versions that I already have :-). I'd like to see the
> >6809 fig forth (I assume it existed, and used the 2 hardware stack
> >pointers, etc).
>
>It's not fig, but if you are interested, you can take a look a my tiny little
>FORTH implementation for the 6809 - Docs are a bit sparse, sorry - it was done
>on a weekend in response to a collegue who had been boasting that he had
>created
>a version of FORTH for the 09 that was faster than any other - I truly enjoyed
>the look on his face the next monday morning when his test program ran
>significantly faster on mine...
>
>Of course I cheated - my FORTH compiled to directly executable code, which
>eliminated the interpreter and chaining through threaded links - this has
>a bit
>of overhead (3 byte JSR instruction instead of 2-byte link address),
>however it
>is offset by the fact that I reduced the header to just the word name (no
>difference between word types - everything is "native"), which saved me 16
>bytes
>(IIRC) over the wordsize in his dictionary. Yes, it uses both hardware stacks.
>
>If you are interested in playing with it, it's available on my museum web
>site,
>in the section on my D6809 homebuilt. The source code is included, and if
>you want
>to try it out, you can run the D6809 emulator, mount the included disk IMAGE,
>boot up my CUBIX OS and type FORTH - this will launch a ready to run
>version of
>my itty bitty FORTH (about a 2.5k executable as I recall).
>
>Regards,
>Dave
>
>
>
>--
>dave04a (at) Dave Dunfield
>dunfield (dot) Firmware development services & tools: www.dunfield.com
>com Vintage computing equipment collector.
> http://www.parse.com/~ddunfield/museum/index.html
Received on Fri Aug 27 2004 - 22:05:28 BST