发个数码管动态显示的汇编版

wangyexin

1. 
   
2.   ORG 0000H
   
3. AJMP MAIN
   
4. TAB: DB 3FH,06H,5BH,4FH
   
5. DB 66H,6DH,7DH,07H
   
6. DB 7FH,6FH,77H,7CH
   
7. DB 39H,5EH,79H,71H
   
8. MAIN: MOV TCON,#10H
   
9. MOV TMOD,#01H
   
10. MOV TH0,#0E8H
    
11. MOV TL0,#00H
    
12. MOV A,#00H
    
13. MOV DPTR,#TAB
    
14. MOV R3,#00H
    
15. 
    
16. LOOP1:
    
17. MOV A,R3
    
18. MOVC A,@A+DPTR
    
19. MOV P0,A
    
20. CALL DELAY
    
21. INC R3
    
22. CJNE R3,#10H,LOOP1
    
23. MOV R3,00H
    
24. AJMP LOOP1
    
25. DELAY:
    
26. MOV R0,08H
    
27. LOOP2: MOV R4,#08H
    
28. LOOP3: JNB TF0,LOOP3
    
29. CLR TF0
    
30. MOV TH0,#0F8H
    
31. MOV TL0,#00H
    
32. DEC R4
    
33. MOV P2,R4
    
34. INC R4
    
35. DJNZ R4,LOOP3
    
36. DJNZ R0,LOOP2
    
37. RET
    
38. END

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