> Thanks for the answers. > I think that i'll make an adapter socket that goes between the jdm and the pic. This adapter only needs a 4.7k resitor from pin 10 to gnd, right? > > Juan Cubillo You could just connect the resistor without an adapter. I agree that grounding the PGM pin is something that will improve programming success of the 16F628, however, I doubt any other PIC that can be programmed by the JDM programmer will be bothered by that pin being grounded (in fact, it is usually a good idea to keep all your pins in a "known" state). Greetings, Maarten Hofman. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist