GoForSmoke:
Something else I wouldn't try with a 328P chip.Long live the state machine!
Hell yeah 
I had fun a bit back trying to move a few non-re-entrant library routines (from the printf family) into kernel space on RetroBSD so as to reduce user-process size (kind of a pre-cursor to shared libraries) a bit back... Not nice trying to convert them to re-entrant 