From The Free On-line Dictionary of Computing (30 December 2018) :
51forth
A subroutine-{threaded Forth for the 8051 by
Scott Gehmlich. It comes with source and documentation.
ftp://smis-novell-1.massey.ac.nz/giovanni/51forth.zip)">(ftp://smis-novell-1.massey.ac.nz/giovanni/51forth.zip).
(1993-04-03)