Can you show your schematic, please, so we may have a chance to spot the possible source of error. Tamas On 4/8/07, Jinx wrote: > > > > 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 tried Mclr with no resistor first ;-( > > Apart from perhaps updating the firmware (reluctant as on dial-up > but will do if really necessary), fresh out of ideas and things to try > > (PS changed the subject line - despite being 'careful' I still wrote ISCP, > which isn't helpful if searching the archives) > > -- > 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