• 2022-06-16
    2 .已知(10H)=5AH,(2EH)=1FH,(40H)=2EH,(60H)=3DH, 执行下列程序段后: MOV 20H , 60H MOV R1 , 20H MOV A , 40H XCH A , R1 XCH A , 60H XCH A , @R1 MOV R0 , #10H XCHD A , @R0 问:( A ) =_____( 10H ) =_____( 2EH ) =_____( 40H ) = _____( 60H ) =_____