[QUOTE=ardhuru; While this is true, my parallel port based EPIC compatible has only 4 wires of ICSP (Gnd, Vpp, clock and data). So, when you connect it to a pic on a breadboard, the pic is constantly getting +5 volts from the target supply and the programmer has no way of controlling it. And yet, even with the internal osc. and MCLR disabled, a 12F6XX has no problems getting programmed over and over again.

I wonder how this can be explained?

Regards,

Anand[/QUOTE]

Hi Anand, EPIC and parallel port type you said. any circuit diagram for further discussion . or site where i could read a schematic please?