> 16F677 is different from what I can tell as you "define" the analog > pin in ADCON0 when you go to read the input. ? Hi Alan, I don't recall the 877 being any different. ADCON1 sets the analogue/digital function of the pins. ADCON0 selects an ADC channel corresponding to a pin that is analogue. See 11.3 in DS30292B -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist