| 单词 | interrupt priority level(IPL) |
| 释义 | interrupt priority level(IPL)In VAX/VMS, an interrupt level at which a software or hardware interrupt is generated. There are 31 possible interrupt priority levels: IPL 1 is lowest, 31 is highest. The levels arbitrate contention for processor service. For example, a device cannot interrupt the processor if the processor is currently executing at an interrupt priority level equal to or greater than the interrupt priority level of the device's interrupt service routine.; VAX/VMS操作系统中的一种中断级别,通常产生软件或硬件中断。中断优先级共有31种, 其中第1级中断为最低,第31级为最高。这些中断优先级解决处理机服务时的冲突。例如, 如果一台处理机正在执行中断服务程序,并且其中断优先级等于或大于另一设备的中断优 先级,则该设备不能中断处理机。 |
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