I tried to write a simple program in assembler to switch on a LED on p1.2, by typing:

setb 1.2
end

however, when I tried to compile it, i got an error and in the log file - it had an arrow pointing to the p1.2 and it said something like 'undeclared identifier'.

I am using AS31 from
http://www.pjrc.com/tech/8051/#as31_assembler

Can you tell me what I am doing wrong and how to correct it.

Thanks,
Dennis.