Dubé and Feeley went back to rework BIT after PICBIT: http://www.scribd.com/doc/49352760/BIT-A-very-compact-Scheme-system-for-microcontrollers http://www.scribd

Dubé and Feeley went back to rework BIT after PICBIT: http://www.scribd.com/doc/49352760/BIT-A-very-compact-Scheme-system-for-microcontrollers http://www.scribd.com/doc/49352760/BIT-A-very-compact-Scheme... With the R4RS library it only needs 13KiB ROM and they claim you can run programs in less than 5KiB RAM. And it comes with a real-time GC. Not hand-coded assembler small, but the kind of development, testing and prototyping environment you get with Scheme is awesome. The MuP21 sounds really impressive. 6000 transistors including video and DRAM is hard to believe.