Olin Lathrop wrote: > > > I don't know why MPASM can understand 64h but not FFh. > > > > Because "FFh" looks like a label. Use "0FFh", instead. > > I don't think it understands "FFh" either. As far as I know, you > have to write "h'FF'" or "0xFF". Why not actually try assembling some code, so you'll know for sure? Here, I'll write some for you: list p=pic16C54 movlw 0ffh end -Andy === Andrew Warren -- aiw@cypress.com === Principal Design Engineer === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu