Ian, regarding a "modern Forth" for Arduino, FORTH, Inc. recently released a SwiftX for Arduino -- you can check for it at http://www.forth.com -- I don't know if they plan to release a demo/evaluation version, but you could ask them!
Ian, regarding a "modern Forth" for Arduino, FORTH, Inc. recently released a SwiftX for Arduino -- you can check for it at http://www.forth.com -- I don't know if they plan to release a demo/evaluation version, but you could ask them!