I started programming in assembly language=A0 with PICkit3. I found out samples that use __config directive but with=A0 PICkit2, that i= s different from PICkit3 E.g PICkit2 uses __CONFIG _CONFIG1, _LVP_OFF & _FCMEN_OFF & _IESO_OFF & _BOR_OFF & _CPD_OFF & _CP_OFF & _MCLRE_OFF & _PWRTE_ON & _WDT_OFF & _INTRC_OSC_NOCLKOUT __CONFIG _CONFIG2, _WRT_OFF & _BOR21V how must=A0 I rewrite that config for using with PICkit3? Is there any explanation of all those configuration bits? Thanks for help L. =A0 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .