2006/6/30, Phillip : > #pragma code > #pragma interrupt InterruptHandlerLow > void InterruptHandlerLow () > { Hi Philips, This code is a BIG problem. Someone has pointed out this in recent post! Check the C18 manual again how you should write your low priority ISR. Best regards, -- WH Tan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist