Phillip wrote : > I think what is going on here is that I'm using interrupt > when I meant interrupt flag bits...my mistake. You were writing about *enabling/disabling* interrupts. And that is not done using the xxxxF bits. > The data sheet says that interrupt flag bits must be cleared > in software to avoid recursive interrupts. Right. Noone have argued against that. > I still think that recursive interrupts was the root cause of > my troubles... If you where trying to run without clearnig the TMR3IF bit, then yes, that would have been a problem. Regards, Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist