关于实验7 我写的汇编代码 出现Divide overflow

pro-serv

1. assume cs:codesg
   
2. data segment
   
3. db '1975','1976','1977','1978','1979','1980','1981','1982','1983'
   
4. db '1984','1985','1986','1987','1988','1989','1990','1991','1992'
   
5. db '1993','1994','1995'
   
6. dd 16,22,382,1356,2390,8000,24486,50065,97479,140417,197514
   
7. dd 345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
   
8. dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
   
9. dw 11542,14430,15257,17800
   
10. data ends
    
11. table segment
    
12. db 21 dup ('year summ ne ?? ')
    
13. table ends
    
14. stack segment
    
15. dw 0,0,0,0,0,0,0,0
    
16. stack ends
    
17. codesg segment
    
18. start:
    
19. mov ax,stack
    
20. mov ss,ax
    
21. mov sp,16
    
22. mov ax,table
    
23. mov ds,ax
    
24. mov bx,0
    
25. mov ax,data
    
26. mov es,ax
    
27. mov bp,0
    
28. mov si,168
    
29. mov cx,21
    
30. s: push cx
    
31. mov di,0
    
32. mov cx,4
    
33. s1: mov al,es:[bp+di]
    
34. mov [bx+di],al
    
35. inc di
    
36. loop s1
    
37. 
    
38. mov byte ptr [bx+4],' '
    
39. mov ax,es:[bp+84]
    
40. mov dx,es:[bp+86]
    
41. mov [bx+5],ax
    
42. mov [bx+7],dx
    
43. 
    
44. mov byte ptr [bx+9],' '
    
45. mov ax,es:[bp+si]
    
46. mov [bx+10],ax
    
47. 
    
48. mov byte ptr [bx+12],' '
    
49. mov ax,[bx+5]
    
50. mov dx,[bx+7]
    
51. div word ptr [bx+10]
    
52. mov [bx+13],ax
    
53. mov byte ptr [bx+15],' '
    
54. 
    
55. add bx,16
    
56. add bp,4
    
57. add si,2
    
58. pop cx
    
59. loop s
    
60. mov ax,4c00h
    
61. int 21h
    
62. codesg ends
    
63. end start

复制代码

一次次手动T单步执行循环过后也没事, 但用G命令跳出 MOV AX,4C00H时,就出现Divide overflow .
特来求助,不知道错在哪里了?

pro-serv

1. assume cs:codesg
   
2. data segment
   
3. db '1975','1976','1977','1978','1979','1980','1981','1982','1983'
   
4. db '1984','1985','1986','1987','1988','1989','1990','1991','1992'
   
5. db '1993','1994','1995'
   
6. dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
   
7. dd 345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
   
8. dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
   
9. dw 11542,14430,15257,17800
   
10. data ends
    
11. table segment
    
12. db 21 dup ('year summ ne ?? ')
    
13. table ends
    
14. stack segment
    
15. dw 0,0,0,0,0,0,0,0
    
16. stack ends
    
17. codesg segment
    
18. start:
    
19. mov ax,stack
    
20. mov ss,ax
    
21. mov sp,16
    
22. mov ax,table
    
23. mov ds,ax
    
24. mov bx,0
    
25. mov ax,data
    
26. mov es,ax
    
27. mov bp,0
    
28. mov si,168
    
29. mov cx,21
    
30. s: push cx
    
31. mov di,0
    
32. mov cx,4
    
33. s1: mov al,es:[bp+di]
    
34. mov [bx+di],al
    
35. inc di
    
36. loop s1
    
37. 
    
38. mov byte ptr [bx+4],' '
    
39. mov ax,es:[bp+84]
    
40. mov dx,es:[bp+86]
    
41. mov [bx+5],ax
    
42. mov [bx+7],dx
    
43. 
    
44. mov byte ptr [bx+9],' '
    
45. mov ax,es:[si]
    
46. mov [bx+10],ax
    
47. 
    
48. mov byte ptr [bx+12],' '
    
49. mov ax,[bx+5]
    
50. mov dx,[bx+7]
    
51. div word ptr [bx+10]
    
52. mov [bx+13],ax
    
53. mov byte ptr [bx+15],' '
    
54. 
    
55. add bx,16
    
56. add bp,4
    
57. add si,2
    
58. pop cx
    
59. loop s
    
60. mov ax,4c00h
    
61. int 21h
    
62. codesg ends
    
63. end start

复制代码

DB 总收入时入个了 ‘16000 ’
经过多次DEBUG之后，发现第45行错了，mov ax,es:[bp+si]应该改为 mov ax,es:[si]
我已经定义了SI初始值为168，再加BP就错了

NGtailang

pro-serv 发表于 2013-1-25 00:27

                               
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DB 总收入时入个了 ‘16000 ’
经过多次DEBUG之后，发现第45行错了，mov ax,es:应该改为 mov ax,es:[si]
...

是什么溢出了。具体的我也不知道。我也碰到过这情况。等高手