On Dec 19, 2006, at 11:16 PM, Paul James E. wrote: > > If I'm understanding this error correctly, it would seem that I'm > going > beyond the 8 levels of interrupts that the stack can take care of. > You do understand that the stack is shared by interrupts AND the "call" instruction, right? If you're several deep in subroutines calls, a single interrupt will overflow your stack. BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist