> This actually helps me out more. I can treat every interrupt as > a 15 second interval...4 interrupts would be a minute. :) If you re-load TMR0H with 27d (1Bh) you'd get 15.007744 seconds - pretty close for minimal effort > >which is 4.194304s @ 4MHz internal clock (16MHz crystal) Here's a funny thing....just after that reply I was looking through a bag of scavenged crystals for an application with odd timing and actually found a 4194.304kHz. Now wondering what the heck it would have been made for -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body