Jinx wrote: > #define clrw clrf WREG ; PIC16Cxxx code substitution > I'm curious as to why his 452 .inc didn't take care of it But I can't find as what you said in 'p18f452.inc' & 'p18c452.inc'. Is there anything possibly wrong with my MPLAB v6.40. Thanks & regards. WH Tan -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu