> > > Powering separately frequently involves a quick little dance to get it > to work. What happens if you let the ICD3 power your circuit? > > i did try that, and it also did not work. i will recheck and see if the errors are identical. > Also, is MCLR tied to anything else, if so, can it withstand 13 volts? > And if you have a resistor from +5 to MCLR, will your +5 rail get too > much current injected into it when MCLR goes to 13 volts? > > There's nothing else in the circuit - it's entirely as i described. My firs= t step was to try to get ICD3 and the 12f629 talking together, after that i want to proceed with my program and attached hardware. It's quite frustrating cos all i wanted was a quick oscillator outputting a 2Hz and 1.5Hz square waves. I thought this would be quick and easy with a pic!!!! --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .