Nicola Perotto writes: > Hi Martin, > find attached the 12C5xx pinout in excel format. The text format follows. Again, many thanks. All the 12C5XX project has to do is roughly time a stream of 60-hertz half cycles and output a signal when one or more are not present. Space is limited but all the logic needed for this project can go in to that one old PIC. Martin --=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 .