On 13 Sep 2003 at 21:14, Dave Tweed wrote: > Well, duh! A xenon flash tube puts out a huge burst of UV. > > Back at Apollo Computer, we used to have a small handheld flash unit that > was specifically designed to instantly erase EPROMs. It worked quite well! It didn't erase it, just locked it up. Actually I think WDT would recover it if I had a well-thought out WDT scheme. It appears that the ISR is still running, but certain registers are pooped upon. Fun! Cheers, Bob -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads