Dear Malcolm Peill, Malcolm Peill originally wrote: > bsf T1CON,TMR1ON ;enable timer1 > > call initdisplay > >I know the timer 1 overflow flag gets set, but never calls the interrupt = >vector. Malcolm Peill on 2001-06-19 02:53:13 AM >My code is all in bank 0 and I don't need to save pclath, W reg, Status etc. >Thanks for the encouragement that the code seems to be ok. I'll have to keep trying. Sorry. Kneejerk reaction. At first glance, it looked like a common newbie mistake. I find it hard to believe that you don't need to save W, but if you say so ... The timer1 setup looks OK to me. Are you sure that the code that executes after you enable the timer (which you didn't post) doesn't disable the timer or its PIE interrupt enable bit or the INTCON interrupt enable bits ? -- David Cary -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body