Perry Curling-Hope gmail.com> writes: >=20 > Did you disable the watchdog timer in the configuration bits setup? > I see no equivalent of clrwt (clear watchdog timer) in the program > Either the watchdog must be disabled or serviced at less than > its timeout interval, or the program (no program) will run, but keep > resetting the micro at default WDT interval. >=20 Also, in the comments you mention that prescaler is assigned to wdt, but bl= ink rate calculations show prescaler assigned to TMR0. without prescaler the b= link rate should be fast enough that you see the lLED as always "on". =20 Sergey Dryga http://beaglerobotics.com --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .