DEVICE AND METHOD FOR TASK MARGIN DEGREE ANALYSIS, AND RECORDING MEDIUM STORED WITH TASK MARGIN DEGREE ANALYZING PROGRAM

摘要

PROBLEM TO BE SOLVED: To shorten the interrupt response time from an interrupt request input signal by making an interrupt control means set respective request flag signals in synchronism with respective external input signals, start deciding priority, and outputting an interrupt request output signal corresponding to a noise decision signal. ;SOLUTION: A noise decision circuit 210 decides the noise of each external input signal as an interrupt request input signal INTn and inputs its noise decision signal to an interrupt controller circuit 122. The interrupt controller circuit 122 sets respective request flag signals by an interrupt request flag circuit 125 in synchronism with the respective inputted external input signals corresponding to the noise decision signal of the noise decision circuit 210. The respective set request flag signals are inputted to a priority decision circuit 127 through an interrupt mask circuit 126 to decide priority, and an interrupt request output signal is outputted to a CPU 128, which performs interrupt processes corresponding to the respective external input signals.;COPYRIGHT: (C)1998,JPO