中断号

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中断号

1

IDT是包含中断号和ISR地址组成的记录集。

IDT contains interrupt number and recordset made up of ISR addresses .
2

根据中断号读取对应的中断描述符。

Read trap or interrupt handler descriptor ;
3

提出在TP－86A机上无需外接8259A，直接使用机上的8255A设置中断类型号以实现中断传送的方法。

The 8255A controller of the TP-86A unit is directly used to realize the interruption transmission without connecting to the external 8259A controller .
4

按时器可以产生一个中断旌旗灯号后，超时，或在操纵过程中供给的计数当前值。

The timer can generate an interrupt signal upon timeout , or provide the current value of count during operation .
5

为了识别中籽源，进而运行对应的中断服务例程（ISR），程序需读取中断悬挂寄存器，获得中断号。

To recognize the interrupt source and run the corresponding interrupt service routine ( ISR ), the program has to check every bit of the interrupt pending register until the interrupt source is found .