Try this, I changed the 1 and 2 and BOREN from your original. Looks okay co= mpared to the config bits in my file. __CONFIG(FOSC_INTRC_NOCLKOUT& DEBUG_OFF& WDTE_OFF& LVP_OFF& BOREN_ON& CP_OFF& CPD_OFF& FCMEN_ON& IESO_ON& MCLRE_OFF& PWRTE_ON); __CONFIG(BOR4V_BOR40V& WRT_OFF); I don't know if you are debugging or not, but you might want to set DEBUG_O= N or DEBUG_OFF accordingly in config 1. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .