| 摘要 |
PROBLEM TO BE SOLVED: To freely select an interrupt source for every interrupt level of a CPU, and to quicken the interrupt processing of the CPU by reducing the number of registers required for interrupt processing. SOLUTION: This interrupt level selecting circuit is provided with a means for dividing an inputted interrupt signal for every interrupt level, a means for selecting the inputted interrupt signal by every bit of interrupt level and an interrupt selection circuit for selecting the input interrupt signal from the value of a selection register. Thus, it is possible to freely select and replace the interrupt signal for every interrupt level of the CPU. COPYRIGHT: (C)2006,JPO&NCIPI
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