此条指令XCHG BL,(SI) 实现数据交换功能。( ) -题库考试答案搜索网

此条指令XCHG BL,(SI) 实现数据交换功能。( )

判断题

2021-09-08 12:42

A、正确
B、错误

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正确答案

答案: A

试题解析

标签：青书学堂平顶山学院微机原理(专升本)

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OR BL,30H
INT 3
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MOV BL, 72H
MOV AL, BL
MOV CL, 4
SHR BL, CL
OR BL, 30H
MOV BH, BL
AND AL, OFH
OR AL, 30H
MOV BL, AL
INT 3
BH=（）,BL=（）,AL=（）,CL=（）

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