1[单选题] 下列说法正确的是())) A.80866CPU有1M字节地址空间，其中最低64K是IO地址空间 B.80866CPU有16位数据线和20位地址线，因此能访问2M字节存储器 - 查题网

>> 河南成教 / 微机原理与接口技术

河南成教 / 微机原理与接口技术

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1[单选题]
下列说法正确的是()))

A.80866CPU有1M字节地址空间，其中最低64K是IO地址空间

B.80866CPU有16位数据线和20位地址线，因此能访问2M字节存储器

C.80866CPU在传送8位数据时，总是使用数据总线低8位

D.80866CPU的NMI和INTR都是中断请求输入信号

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微机原理与接口技术

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