Hi there, I am working with MPLABC using MPLAB V3.40. The PIC I use is a p12c509 Anybody knows how to : - intstruct the compiler to save the osccal value ( this is placing movwf 0x5 at 0x000) - setting the configuration bits (IntRC,CP off,MCLRE off ...) For the first question I have a solution: - I use PIP02 to load my hex file and the place the code at 0x000 But there must be a more elegant way. The second one ??? - I have tried using pip02 to do this, but pip02 does not allow setting the configuration bits of the p12c509. I tried to solve this by lying to pip02 (shame on me ;-o), telling it I was using the p16c56 but then I am still not able to control the MCLRE bit...(Is this method correct anyway ???) last question - Whats the best program (can edit the configuration bits) to program a p12c50x using a serial type programmer? Thanx. Kurt Herremans