Jim Robertson wrote: > Try: http://www.microchip.com/Download/Tools/PICmicro/Program/icsp/30277c.pdf Hi Jim, That document is already obsolete. DS30277D is the latest version of Microchip's IN-CIRCUIT SERIAL PROGRAMMINGT GUIDE. Use this link instead: www.microchip.com/download/lit/suppdoc/specs/30277d.pdf Best regards, Ken Pergola -- 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