文件名称:5
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PC/XT机的8259A的IR2引脚上接有能随机
产生中断请求信号的外设，要求每响应一次中
断在显示器上显示“This is a 8259A interrupt!”，
中断10次后程序返回DOS。
-PC/XT machines IR2 pin on the 8259A then there can be randomly generated peripheral interrupt request signal, in response to a disruption of every show in the display " This is a 8259A interrupt!" , After the interruption of the procedure 10 times to return to DOS.
产生中断请求信号的外设，要求每响应一次中
断在显示器上显示“This is a 8259A interrupt!”，
中断10次后程序返回DOS。
-PC/XT machines IR2 pin on the 8259A then there can be randomly generated peripheral interrupt request signal, in response to a disruption of every show in the display " This is a 8259A interrupt!" , After the interruption of the procedure 10 times to return to DOS.
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5.txt