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191问答库 > 这是一个多开关状态指示的汇编程序：我看不懂ANL A,#0F0H和ORL A,#0F0H的作用，请会的朋友指点一下。

这是一个多开关状态指示的汇编程序：我看不懂ANL A,#0F0H和ORL A,#0F0H的作用，请会的朋友指点一下。

2025-03-15 08:58:08

推荐回答（1个）

回答1：

ANL A，#0F0H 在这和下四名就是把高位移到低位
ORL A，#0F0H 就是把上移后的高四位再全装为1

这编的不好
从MOV A，P1 后用下二句就可完成。

SWAP A
ORL A，#0F0H

MOV P1，A

左右移都可，它的意主把高四位移到低四位。这看直观点吧。只是没我这二句更直观。

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