> Could someone explain how watchdog timer routines > are typically implemented and some general > guidelines??? Embedded Systems Programming Magazine has some generic articles on watchdog timers which may be of interest. Just go to http://www.embedded.com/ and search on 'watchdog'. __________________________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo http://search.yahoo.com -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads