I had an ICD2 which I managed to destroy (blew the buffer circuits I think)= so = I bought an ICD3 to replace it. In one of my projects I use an 12F629 where= the = MCLR pin is used as a digital input. The ICD2 happily programmed and = reprogrammed the chip (even though MPLAB complained about that this was not = supported) but the ICD3 could not reprogram it after it had been programmed = once. Worked OK with the PICKIT2 though. /Ruben =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D Ruben J=F6nsson AB Liros Electronic Box 9124, 200 39 Malm=F6, Sweden TEL INT +46 40142078 FAX INT +46 40947388 ruben@pp.sbbs.se =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist