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设8位无符号X存于片内30H单元,Y存于31H单元,当X>=50,Y=X;当X<=30;y...
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ORG 0000H MOV A,31H CJNE A,31，CHECK CHECK: JNC DONE MOV A,31H DONE: MOV 32H,A HERE: SJMP HERE SJMP END
试编写程序查找在片内RAM20H-50H单元内数据块中现00H的次数,并将查找结果存放在片外RAM的2046H单元...结果存至内部RAM的30H和31H单元,30H存差的低8位。解:程序如下: MOV A,#5DH CLR C SUBB A,#...2-7 编写程序,若累加器A的内容分别满足以下条件时,则程序转至LABEL存贮单元。设A中存的是无符号数...