Question

当我运行emu8086时，这个结果（ans）返回给我0 ..为什么？

ValueError: Some errors were detected !
    Line #2 (got 26 columns instead of 22)
    Line #3 (got 26 columns instead of 22)
    Line #4 (got 26 columns instead of 22)
    Line #5 (got 26 columns instead of 22)
    Line #6 (got 28 columns instead of 22)
    Line #7 (got 26 columns instead of 22)
    Line #8 (got 28 columns instead of 22)
    Line #9 (got 26 columns instead of 22)
    Line #10 (got 26 columns instead of 22)
    Line #11 (got 26 columns instead of 22)
    Line #12 (got 26 columns instead of 22)
    Line #13 (got 26 columns instead of 22)
    Line #14 (got 28 columns instead of 22)
    Line #15 (got 26 columns instead of 22)
    Line #16 (got 28 columns instead of 22)
    Line #17 (got 26 columns instead of 22)
    Line #18 (got 26 columns instead of 22)
    Line #19 (got 26 columns instead of 22)
    Line #20 (got 26 columns instead of 22)
    Line #21 (got 26 columns instead of 22)
    Line #22 (got 28 columns instead of 22)
    Line #23 (got 26 columns instead of 22)
    Line #24 (got 28 columns instead of 22)
    Line #25 (got 26 columns instead of 22)
    Line #26 (got 26 columns instead of 22)
    Line #27 (got 26 columns instead of 22)
    Line #28 (got 26 columns instead of 22)
    Line #29 (got 26 columns instead of 22)
    Line #30 (got 28 columns instead of 22)
    Line #31 (got 26 columns instead of 22)
    Line #32 (got 28 columns instead of 22)
    Line #33 (got 26 columns instead of 22)

Answer 1

mov ax,@data
mov dx,ax

这部分代码必须设置DS段寄存器你写了一个拼写错误并改写了DX！

mov ax, @data
mov ds, ax

由于此错误，AL * BL乘法（4）的结果仍然由mov ans,ax写入内存，但它没有进入数据段。它覆盖了ProgramSegmentPrefix的第一个单词，因为那是DS所指向的位置。

关于变量返回类型（程序集）

1 个答案: