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    • 3. 发明授权
    • Interrupt control apparatus for a microprocessor providing real time
priority processing of interrupt requests
    • 用于微处理器的中断控制装置,提供中断请求的实时优先处理
    • US5163152A
    • 1992-11-10
    • US684466
    • 1991-04-11
    • Kosei Okamoto
    • Kosei Okamoto
    • G06F9/48G06F13/26
    • G06F13/26
    • An interrupt control apparatus of a microprocessor comprises a controller for selecting an interrupt requirement having a highest priority from a plurality of interrupt requirements and outputting the signals indicative of this highest priority; a comparator for comparing the priority of the interrupt requirement selected by the interrupt controller with mask information indicating a priority as to whether the interrupt requirement is executed or not; a detector for detecting whether the priority of the interrupt requirement is outputted from the controller or not; and a judging device for stopping an output of the controller when the priority of the selected interrupt requirement is lower than the priority of the mask information. The judging device makes the controller further select an interrupt requirement having a highest priority from the plurality of interrupt requirements by the controller and output a signal indicative of this priority when the detector detects the stoppage of the output of the controller. The judging device instructs the execution of the selected interrupt requirement when the priority of the selected interrupt requirement is higher than or equal to the priority of the mask information.
    • 微处理器的中断控制装置包括:控制器,用于从多个中断要求中选择具有最高优先级的中断要求,并输出指示该最高优先级的信号; 比较器,用于将由中断控制器选择的中断要求的优先级与指示是否执行中断要求的优先级的掩码信息进行比较; 用于检测是否从控制器输出中断要求的优先级的检测器; 以及当所选择的中断要求的优先级低于掩码信息的优先级时,用于停止控制器的输出的判断装置。 判断装置使得控制器进一步从控制器的多个中断要求中选择具有最高优先级的中断要求,并且当检测器检测到控制器的输出的停止时,输出表示该优先级的信号。 当所选择的中断要求的优先级高于或等于掩码信息的优先级时,判断装置指示执行所选择的中断要求。