I wrote a mini program that uses pins of PORTA. I set the pins to output and inputs. When i have=20 a 1 value to an input pin i set an output pin wich drives to a led to 1. It works with RA1 RA0 RA2 RA3 but not with RA4. In general i run same programs and work with other pins, and with other not. Sorry for the English. Thanks. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics