> My 5th little PIC project is working fine thanks in part to all the > wonderful help I have received on this list. Oh sure, I came for the technical help thing but stayed for the dress code I'm not very familiar with the 508 (and its manual is currently missing, presumed buried in paperwork) but do the POR conditons of the F84 apply to the 508 ? If the pins are in undefined states on power-up and the power-up timer (PWRT) and oscillator start-up timer (OST) are in effect, that would extend that undefined period, giving you the blips. Perhaps a pull-up in parallel with LED might cure it -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads