> It depends on which method you're interested in. I'll describe both. > First, LVP (Low-Voltage Programming): And maybe you don't need ICSP? Consider a bootloader, 1 pin minimum (and if you pay me I'll make a version that can bootload using only the MCLR pin). 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 PICList is archived three different ways. See http://www.piclist.com/#archives for details.