Before, all is fine, my programmer, pro16, works fine. After I changed a = PC,=20 two of my PIC stoped function, but can be programmed and verified!! Then today, I put a new F877, same. can be programmed and verified, but did not osci!! I wondered if my programmer caused all of my pic dead or my programmer can make hex file transfer with error that stop pic to osci. any one can help to try to programm my pic? then I can find out=20 which part my system is in fault..... any one who is located at Toronto and willing to help me to programm my = pic, with a test hex file???? -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.