alan smith wrote: > When the following is excuted....causes the ISR not to be executed, > yet interupts, and everything else is the same....any idea? Only thing I can think of, is that FSR is pointing to something like INTCON or such, thus disabling your interrupts... -- Ciao, Dario il Grande (522-485 a.C.) -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist