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13.输入输出部分至此已说明了取指令阶段和执行指令阶段这样的基本阶段和间接阶段。现在打算讲中断阶段。中断,通常也叫“插入”,即把执行别的任务插入到正在执行的任务的功能。计算机里的插入,大致可分为内部插入与外部插入两种。内部插入是由于计算机电源下降时、存贮器的奇偶错误产生时、存贮器保护功能起作用时、高速数据传输完了时、发生溢出时等等计算机内部状况所引起。外部插入是由于计算机外部设备(对计算机施行)的输入输出动作所引起。所谓外部设备,除了作为计算机外围装置的纸带读出机、纸带穿孔机、电传打字机、宽行打印机、磁带、磁盘装置等之外,还以数字多量程测量仪表等测试仪器或一般
13. I / O section So far, the basic and indirect phases of the instruction fetch phase and the execution instruction phase have been described. Now intend to speak interrupt phase. An interruption, often called “insertion,” is the ability to insert additional tasks into the task being performed. Computer in the insert, can be divided into internal and external insert two. Internal insertion is caused by computer internal conditions when the computer power drops, when memory parity errors occur, when memory protection functions, when high-speed data transfer ends, when overflow occurs, and so on. External plug-in is due to the input and output actions of the external computer equipment (to the computer). The so-called external equipment, in addition to the computer peripherals as a tape reader, tape punch, teletype, wide-line printers, tapes, disk devices, but also digital multi-range measuring instruments and other test equipment or general