This seems like a silly request but where can I find a list of all instructions I can use inside PBP ? Yes, I've read the manual and it seems quite clear about instructions unique to PBP but what about lines like:

xxx = (PORTB >> 4)

I know what this does (reads the top 4 bits of the PORTB, I think !) but are commands like this documented anywhere ? Is there a good reference book ?

Thanks,

Andrew