How many instructions does it take to make a Forth for target development work? Does memory grow on trees? Does the cost of the development system come out of your own pocket? A 3- instruction Forth makes Forth affordable for target systems with very limited memory. It can be brought up quickly on strange new hardware. You don't have to do without Forth because of memory or time limitations. It only takes 66 bytes for the Motorola MC68HC11. Full source is provided.
I remain skeptical of the practicality of Forth in a large-project, multiple-programmer setting. But as an embedded ROM monitor, Forth is fantastic. This idea is pretty cool, and I may have to bust out my AVR programmer and try it.