OK, this is truly strange. I got an ICD3 a couple months ago, only recently have had time to play with it. I've used it successfully on a number of 8 bit projects, but no joy on 16-bit projects. I always get either no target or more commonly, target ID =3D 0; Well, one thing that was constant was that on 16 bit projects I was using the supplied cable but on 8 bit projects I was using a variety of cobbled up cables, some pretty bad. So, suspecting Microchip's cable I made up another, and got the same result. Well, the other thing that is constant is that all the 16 bit things I tried were on Microchip boards; the 28 pin starter, Explorer 16, or PIC24FJ256DA210 board. So as a last gasp, I stuck a 30F3013 on one of those stupid proto boards, used a very shaky cable, and it worked first time out! Now, the made up duplicate of the Microchip cable I made by carefully duplicating Microchip's cable. Is it possible that the original cable was wired wrong? Doesn't seem likely, but I did use the original cable as a guide, rather than the schematics. But that cable bring wrong seems very far fetched. Is there something odd about Microchip's various experimenter boards?=20 Same issue on three different boards seems equally unlikely. I'm totally befuddled. --McD --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .