> Where can we learn more about it«s debugging feature. The datasheet just
> say it is available from Mchip and uses the serial programming pins,
> consumes one stack level and some program memory.

How compatible is it to the 16C77? I have a 16C77 HEX file that I don't 
have the source of. I can't do changes to it, except for hex editing
single commands (to not move stuff around). Can I use the 16F877 with
that software?