王爽汇编语言实验10.3的问题

vbplay

1. assume cs:code,ds:data,cs:stack
   
2. 
   
3. data segment
   
4. db 10 dup (0)
   
5. data ends
   
6. stack segment
   
7. db 16 dup (0)
   
8. stack ends
   
9. code segment
   
10. start:
    
11. mov ax,stack
    
12. mov ss,ax
    
13. mov sp,16
    
14. mov ax,12666
    
15. mov bx,data
    
16. mov ds,bx
    
17. mov si,0
    
18. call dtoc
    
19. 
    
20. mov dh,8
    
21. mov dl,3
    
22. mov cl,2
    
23. mov si,0
    
24. call show_str
    
25. 
    
26. mov ax,4c00h
    
27. int 21h
    
28. 
    
29. dtoc:mov cx,10
    
30. div cx
    
31. mov cx,ax
    
32. jcxz ok
    
33. add dx,30h
    
34. mov ds:[si],dx
    
35. mov dx,0
    
36. inc si
    
37. jmp short dtoc
    
38. ok:
    
39. add dx,30h
    
40. mov ds:[si],dx
    
41. ret
    
42. 
    
43. show_str: push cx
    
44. push dx
    
45. mov al,dl;dl 是列数
    
46. mov ah,0
    
47. mov di,ax
    
48. mov ax,0b800h
    
49. mov es,ax
    
50. mov cl,ds:[si];第一个字母
    
51. mov ch,0
    
52. jcxz ook
    
53. mov al,160
    
54. mul dh;dh是行数
    
55. pop dx
    
56. mov bx,ax
    
57. mov es:[bx+di+1],cl
    
58. pop cx
    
59. mov es:[bx+di+2],cl
    
60. inc si
    
61. add di,2
    
62. jmp short show_str
    
63. ook:
    
64. pop dx
    
65. pop cx
    
66. ret
    
67. 
    
68. code ends
    
69. end start

复制代码

代码如上，debug 的时候一切正常，直接在cmd下运行该程序是提示Divide overflow