The R65Fl1 and F68K Single-Chip Forth Computers

The R65Fll, introduced mid year 1983, was the first commercially available single-chip Forth "engine. " It has remained relatively unchallenged in its market position for over one year. Other single-chip systems are under development. In all probability, near the end of 1984, the F68K will become the second single-chip engine for the Forth language, with an anticipated 20 times execution speed improvement in performance over its predecessor. This paper focuses on the design methodologies used in the development of the R65Fli and the new F68K