标题: PROTEUS仿真：单片机中断优先级的认识 [打印本页]
作者: 多喝点    时间: 2020-1-31 21:30
标题: PROTEUS仿真：单片机中断优先级的认识
仿真电路图：




汇编程序代码：
  1. ;====================================================================
  2. ; Main.asm file generated by New Project wizard
  3. ;
  4. ; Created:   周三 1月 29 2020
  5. ; Processor: AT89C51
  6. ; Compiler:  ASEM-51 (Proteus)
  7. ;====================================================================

  9. ORG 0000H
  10. AJMP MAIN
  11. ORG 0003H
  12. AJMP INT_0
  13. ORG 0013H
  14. AJMP INT_1

  16. ORG 0030H

  18. MAIN:
  19. MOV IE,#85H;
  20. MOV SP,#30H;
  21. SETB PX1;
  22. MOV TCON,#5H;


  25. RENEW:
  26. MOV R0,#10;
  27. MOV A,#0;
  28. LOOP:
  29. MOV P0,#0FFH;
  30. MOV P2,#0FFH;
  31. MOV P1,A;
  32. LCALL DELAY;
  33. LCALL DELAY;
  34. LCALL DELAY;
  35. INC A;
  36. DJNZ R0,LOOP;
  37. LJMP RENEW;


  40. ;================================================

  42. INT_0:
  43. PUSH PSW;
  44. PUSH ACC;
  45. SETB RS0;
  46. CLR RS1;

  48. MOV R1,#2;

  50. RENEW0:
  51. MOV R2,#10;
  52. MOV A,#0;

  54. LOOP0:
  55. MOV P0,A;
  56. LCALL DELAY;
  57. LCALL DELAY;
  58. LCALL DELAY;
  59. INC A;
  60. DJNZ R2,LOOP0;
  61. DJNZ R1,RENEW0;
  62. POP ACC;
  63. POP PSW;

  65. RETI;

  67. ;===============================================
  68. INT_1:
  69. PUSH PSW;
  70. PUSH ACC;
  71. CLR RS0;
  72. SETB RS1;

  74. MOV R3,#2;

  76. RENEW1:
  77. MOV R4,#10;
  78. MOV A,#9;

  80. LOOP1:
  81. MOV P2,A;
  82. LCALL DELAY;
  83. LCALL DELAY;
  84. LCALL DELAY;
  85. DEC A;
  86. DJNZ R4,LOOP1;
  87. DJNZ R3,RENEW1;
  88. POP ACC;
  89. POP PSW;

  91. RETI;

  93. ;==============================================


  96. DELAY:
  97. MOV R7,#11111111B;延时一段时间?
  98. D1:
  99. MOV R6,#11111111B;
  100. DJNZ R6,$;
  101. DJNZ R7,D1;?
  102. RET;子程序返回

  104. END;
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