- 6502 Emulation library
- uC-Makefile
- F1 (^N): reset
- F2 (^M): advance tape
- F3 (^O): rewind tape
- F4 (^P): load program from tape (by simulating typing it)
- F6 (^R): checkpoint machine
- F7 (^S): restore from current checkpoint on tape
- F10(^W): watch CPU execute instructions
- Underscore is rubout