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  • 20201228龙雪江村pep9课下作业

    1.伪代码算法:
    Set sum to 0
    Read num1
    Set sum to sum+sum1
    Read num2
    Set sum to sum+sum2
    Read num3
    Set sum to sum+sum3
    Write sum
    2.
    得到的机器指令如下:
    12 00 0B 00 00 00 00 00 00 00 00 C1 00 03 31 00
    05 61 00 05 31 00 07 61 00 07 31 00 09 61 00 09
    E1 00 03 39 00 03 00 zz
    3.整理出的汇编语言

    BR main
    sum: .WORD 0x0000
    num1: .BLOCK 2
    num2: .BLOCK 2
    num3: .BLOCK 2

    main: LDWA sum,d
    DECI num1,d
    ADDA num1,d
    DECI num2,d
    ADDA num2,d
    DECI num3,d
    ADDA num3,d
    STWA sum,d
    DECO sum,d
    STOP
    .END

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  • 原文地址:https://www.cnblogs.com/jiangcun/p/13909078.html
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