On Mon, 18 Sep 2006, Phillip wrote: > So what you are saying is that if I'm in a high priority interrupt and > another one happens I'm toast???? If another interrupt flag becomes set while you're in the ISR, you will not normally re-enter the ISR, because the PIC has cleared GIEH. You would only re-enter if you had set GIEH in the ISR, which is not something that is normally done. -- John W. Temples, III -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist