Thanks Andy! That did indeed fix it. I knew I must have been overlooking something; that was it. Thanks again. Tom M. > Tom: > > Somewhere in the Timer1 section of your datasheet is a table > called "Registers Associated with Timer 1"; if you look at that > table, you'll see that the PEIE bit (in the INTCON register) is > used by Timer1. If you then track down the INTCON description, > you'll see that PEIE enables "peripheral interrupts" like TMR1IF. > > You need to add a "BSF INTCON,PEIE" instruction to your code. > > -Andy -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body