Mike, when you say "special header" do you mean the 6 pin, usually RJ-11 header as below: 6: NC 5: RB6 4: RB7 3: GND 2: VDD 1: VPP Has anyone on the list had good results with the PIC16F628A and ICD2 debugger? - if it only 'kinda' works, I'll redesign to use a PIC18F452 part which I know works well with the ICD2!! Regards, Peter Moreton QRO Solutions Ltd > >Be carefull, the 16F628A is supported only through the use of a special >header. The standard 16F628A device has no onboard ICD capability. > >Mike -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu