Hi I sure that there was a FIG-86 listing done( would run on a 8088 ). There is also a large Forth that runs under DOS called FPC that is available over the net. For those that want to create there own smaller '86 Forth, there is a tool called TCOM ( by the same author ) that creates COM files. Since these are just code, they can be made to work on any '86 compatible platform. With minor changes, any target processor can be used( I've used it to create 8051 and Z80 code ). As I recall, the release comes with a number of examples of targeting for other machines. It was mentioned that a Forth could be as small as 32K. I've done quite a few that run in less that 8K of space ( 6K ROM and 2K RAM ). If one doesn't need the interpreter and compiler, 2K systems are quite practical for many applications. These are often done as tethered systems where something like a PC has the compiler and interpreter. The application machine only needs a way to read/write memory, execute and break execution. Dwight