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发表于 2014-10-24 09:16:26
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显示全部楼层
- assume cs:code ,ds:data ,es:table
- data segment
- db '1975','1976','1977','1978','1979','1980','1981','1982','1983'
- db '1984','1985','1986','1987','1988','1989','1990','1991','1992'
- db '1993','1994','1995'
- ;以上是表示21年的21个字符串,0-53h
- dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
- dd 345980,59827,803530,1183000,1843000,2759000,3753000,4649000,5937000
- ;以上是表示21年公司总收入的21个dword型数据 ,54h-0a7h
- dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
- dw 11542,14430,15257,17800
- ;以上是表示21年公司雇员人数的21个Word型数据 ,0a8h-0d1h
- db ' ' ;0d2h
- data ends
- table segment
- db 21 dup ('year summ ne ?? ')
- table ends
- code segment
- start: mov ax,data
- mov ds,ax
- mov ax,table
- mov ss,ax
- mov bx,0
- mov si,0
- mov bp,0
- mov cx,21 ;bx的值始终未变,要bx有什么用。?
- ;哪里优化了?
- ;为什么在debug中用d看不到应该有的结果?
- s0:mov ax,[bx+si]
- mov [bp+0],ax
- add si,2
- mov ax,[bx+si]
- mov [bp+2],ax
- add si,2
- add bp,10h
- loop s0
-
- mov cx,21
- mov bp,0
- mov si,0
- s1:mov ax,[bx+si+84]
- mov [bp+5],ax
- add si,2
- mov ax,[bx+si+84]
- mov [bp+7],ax
- add si,2
- add bp,10h
- loop s1
-
- mov cx,21
- mov bp,0
- mov si,0
- s2:mov ax,[bx+si+168]
- mov [bp+10],ax
- add si,2
- add bp,10h
- loop s2
-
- mov cx,21
- mov bp,0
- s3:mov ax,[bp+5]
- mov dx,[bp+7]
- div word ptr [bp+10]
- mov [bp+13],ax
- add bp,10h
- loop s3
-
- mov ax,4c00h
- int 21h
- code ends
- end start
复制代码 这是小鱼老师的另外一个程序,我在注释里提了三个问题。运行结果还是不对
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