Ah, for a minute there I was excited that someone had written an onboard assembler that targeted multiple CPU's, but then I read the article .. its a wonderful thing to see such things being made as a cross-platform OS development environment for 8-bit CPU's in this day and age. Still, I yearn for better onboard tools. :)
You probably want FORTH then :)
Yeah, actually for me at the moment, Lua is the thing, eLua specifically. No onboard editor .. yet!