> How does it looks signals on serial clk and data ? Still no scope, so I cannot take a look.... > Do you have used ICSP Yes, and now that you ask: when I put just the chip in the testclip I have (almost) no problems. > ? If yes, some anoying problems can be avoided if you have a pullup > resistor near the chip on both clk and data lines and a small > capacitor ( 10...100pF ) on data line. I've made three or four parallel > programmers and some of those, doesn't work without this trick. I'll give that a try. > Some friends reports that 13.5V is not enough for some chips in new pic > series. According to the 16F628 spec it is the absolute maximum.... Wouter -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu