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文件名称:weiji
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请编写程序，设置8255A的PA、PB、PC口均工作于方式0，将PB口的数据取反后送PA口输出；用C口置位/复位功能，在8255的PC7端口输出一个正脉冲（脉冲宽度不计）。8255的地址为：PA口为160H，PB口为161H，PC口为162H，控制端口为163H-Please write a program, set the 8255A' s PA, PB, PC port are working in the mode 0, the PB port data output port to take anti-evacuation PA with C port set/reset function, in 8255 the port outputs a positive pulse PC7 (pulse width count.) The address of 8255: PA mouth as 160H, PB mouth as 161H, PC port is 162H, 163H control port
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weiji.doc