IRQ function
2003-04-21 by wflsa
however, I think this is a design fault about it have not triggered interrupt mode register in MC683xx, because it is not easy to call ISR. but is have a triggered interrupt mode register in motorola other MCU. since Motorola is cancelled the triggered interrupt mode register ,corresponding solution should be developped. For example,A specified IC which can output the matching low level pulse for interrupt request