Hi ! In the directions for programming of PIC16F87X from Microchip stands following: "To disable low voltage ICSP mode, the LVP bit must be programmed to '0'. This must be done while entered with high voltage entry mode (LVP bit =3D 1). Can anybody tell me what it really says there and concrete, what I have to do to get the programming working well?? Regards =C5keN -- 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