Hi Jinx, on 10F2xx devices MCLR is on the same pin as Vpp therefore you should protect your Vdd line with a diode (Vpp is 12V so it could ruin your device / circuit and even your programmer). I've actually using the internal pullup for MLCR so no external pullup nor diode necessary for ICSP on my device - it might be your soulition as well. Regards, Tamas On 4/8/07, Jinx wrote: > > > Just one thought, are you using the latest MPLAB version and > > latest PS+ firmware? > > MPLAB 7.30. 10F is green-lighted > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- unPIC -- The PIC Disassembler http://unpic.sourceforge.net -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist