Indeed. I?d suggest starting with the PDP-11 Fig-Forth implementation.
Very little of that is machine code, so if you rewrite those little bits
in your favorite assembler, the rest should just run without change.
Are hte old FIG Forth listings available on-line anywhere? From what I
remember they were public domain so there shouldn't be any problems in
making them avaialble, but I couldn't obivously find them.
-tony