> I change the RB7 pin on the rising edge > (snip) Succes. I am trying to program an 18F, so far I can read and write (singel panel only) to code and configuration memory, but I can not get the chip to do an erase. Wouter van Ooijen -- Van Ooijen Technische Informatica: http://www.voti.nl Jal compiler, Wisp programmer, WLoader bootloader, PICs kopen -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics