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1. 发明授权

US4761732A Interrupt controller arrangement for mutually exclusive interrupt signals in data processing systems 失效
标题翻译：用于数据处理系统中互斥中断信号的中断控制器布置
公开(公告)号：US4761732A
公开(公告)日：1988-08-02
申请号：US802988
申请日：1985-11-29
申请人： Ismail I. Eldumiati , David T. Melnik , Robert P. Wiederhold
发明人： Ismail I. Eldumiati , David T. Melnik , Robert P. Wiederhold
IPC分类号： G06F13/24
CPC分类号： G06F13/24
摘要： An interrupt controller circuit arrangement is used for encoding and storing "interrupt" signals indicating random (asynchronous) occurrence of corresponding events and for delivering corresponding "interrupt" (alarm command) signals to a (synchronous) microprocessor corresponding to the events as they occur. The events are divided into two (or more) sets in order to reduce the required number of latches and to increase the speed of operation. One (or more) of these sets consists of events which never can occur "simultaneously" (i.e., which are mutually exclusive in the sense that (within each of such sets) not more than a single one of the events can occur--and can occur only once--within a prescribed amount of time); the remaining set consists of the remaining events--i.e., those which can occur "simultaneously" or can occur simultaneously with one or more of those in the other set(s). In this way only the interrupt signals indicating the occurrence of events in the remaining set need be individually latched in separate latches each of which is devoted to a separate one of the events in that set.
摘要翻译：中断控制器电路装置用于编码和存储指示对应事件的随机（异步）发生的“中断”信号，并用于将相应的“中断”（报警命令）信号传送到对应于事件发生的（同步）微处理器。事件被分为两个（或多个）集合，以便减少所需的锁存数量并提高操作速度。这些集合中的一个（或多个）由不能“同时”发生的事件组成（即，在这些集合中的每个集合内，不超过一个事件可以发生的意义上，这些事件是相互排斥的，并且可以仅在一定时间内发生一次）; 剩余的组由剩余事件组成，即可同时发生的事件，或者可以与另一组中的一个或多个同时发生。以这种方式，只有指示剩余集中的事件发生的中断信号需要单独锁存在单独的锁存器中，每个锁存器专用于该集合中的事件的单独一个。

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