I'm prototyping with a 18f452 on a solderless breadboard, but the ICD2 never recognizes the PIC chip("cannot validate target device"). ICD2 passes the self test, I'm providing power to all of the Gnd/Vdd pins, and I've provided an external clock source of 4MHz through a function generator. Are there any gotchas you guys can think of? Any help is greatly appreciated. -- Frank Dai frankdai@umail.ucsb.edu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist