WH Tan wrote: > It look like MPLAB 6.40 is unable to regonize CLRW as a mnemonic. Right. I see no such opcode in the data sheet. What do you expect it to do? ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu