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文件名称:interface
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- 上传时间:2012-11-16
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文件大小:864byte
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这是一个用汇编语言编写实现的可编程并行接口实验,(1) 设置8255A的A口工作在方式1输出。
(2) 每按一次单脉冲按钮产生一个正脉冲使8255A产生一次中断请求。
(3) 设计中断服务程序,依次输出01H、02H、04H、08H、10H、20H、40H、80H,使L0~L7一次发光。
-It is written in assembly language implementation of a programmable parallel interface experiments, (1) A set 8255A' s work in the way of an output port. (2) a single pulse each time the button produces a positive pulse to generate an interrupt request 8255A. (3) Design interrupt service routine, followed by the output 01H, 02H, 04H, 08H, 10H, 20H, 40H, 80H, so that a light L0 ~ L7.
(2) 每按一次单脉冲按钮产生一个正脉冲使8255A产生一次中断请求。
(3) 设计中断服务程序,依次输出01H、02H、04H、08H、10H、20H、40H、80H,使L0~L7一次发光。
-It is written in assembly language implementation of a programmable parallel interface experiments, (1) A set 8255A' s work in the way of an output port. (2) a single pulse each time the button produces a positive pulse to generate an interrupt request 8255A. (3) Design interrupt service routine, followed by the output 01H, 02H, 04H, 08H, 10H, 20H, 40H, 80H, so that a light L0 ~ L7.
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8255-1_1.asm
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