TonyD,
I used something similar called 'nyleze' when building my 6809 computer back in the 80s. I tend to use what I have (I have a parsimonious streak) even if that means inconvenience. We should suffer for our art
SH,
I have some 68B50s I could press into service, though the bus structure is somewhat incompatible. Yes, a serial port would be useful...