In the case of an 18F part at least, can the ICD2/ICD3 be successfully=20 used for programming and debugging when the PIC is only intended for=20 int.osc. use? I've only ever developed PICs with external oscillators attached, so=20 have never needed to wonder. Thanks, Matt --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .