实验10-3

18555587

1. assume cs:code
   
2. 
   
3. data segment
   
4. db 10 dup(0)
   
5. data ends
   
6. 
   
7. code segment
   
8. start:
   
9. mov ax,12666
   
10. mov bx,data
    
11. mov ds,bx
    
12. mov si,0
    
13. call dtoc
    
14. 
    
15. mov dh,8
    
16. mov dl,3
    
17. mov cl,2
    
18. call show_str
    
19. 
    
20. mov ax,4c00h
    
21. int 21h
    
22. dtoc:
    
23. mov bx,10
    
24. mov di,0
    
25. s2:
    
26. mov dx,0
    
27. div bx
    
28. add dx,30h
    
29. push dx
    
30. inc di
    
31. mov cx,ax
    
32. jcxz s3
    
33. jmp short s2
    
34. s3:
    
35. mov cx,di
    
36. s4:
    
37. pop ax
    
38. mov [si],al
    
39. inc si
    
40. loop s4
    
41. mov si,0
    
42. ret
    
43. show_str:
    
44. mov ax,0b800h
    
45. mov es,ax
    
46. mov al,0a0h
    
47. dec dh
    
48. mul dh
    
49. mov bx,ax
    
50. mov al,2
    
51. mul dl
    
52. sub ax,2
    
53. add bx,ax
    
54. mov di,0
    
55. mov al,cl
    
56. mov ch,0
    
57. s1:
    
58. mov cl,[si]
    
59. jcxz s
    
60. mov es:[bx+di],cl
    
61. mov es:[bx+di+1],al
    
62. inc si
    
63. add di,2
    
64. jmp short s1
    
65. s:
    
66. ret
    
67. code ends
    
68. 
    
69. end start

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