Sorry, You should read DEBUG_ON (not DEBUG_OFF) __CONFIG( FOSC_INTOSCIO & DEBUG_ON & LVP_OFF & WDTE_OFF & PWRTE_OFF & BOREN_OFF & CP_OFF & MCLRE_OFF );=20 I made so many tests I forgot to put back these codes like I tested them.. So the tests were made using DEBUG_ON. Sorry. -- View this message in context: http://microcontrollers.2385.n7.nabble.com/PI= C16F88-debugging-using-internal-oscillator-issue-tp198964p198999.html Sent from the MicroControllers - PIC mailing list archive at Nabble.com. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .