>OTOH, you might be having issues with context saving at
>the start of the ISR. Can you post the first 10 or so
>lines of the ISR, or maybe the entire ISR?

That was my immediate thought too. I bet you are not saving-restoring the
banksel register in the ISR.

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist