main.lst

P89LV51RD2单片机扩展并行输出源码

C51 COMPILER V7.10   MAIN                                                                  09/22/2007 22:08:39 PAGE 1   


C51 COMPILER V7.10, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /*
   2                  main.c
   3                  扩展并行输出端口
   4          */
   5          
   6          
   7          #include <reg51.h>
   8          #include <absacc.h>
   9          
  10          
  11          /*
  12          函数：Delay()
  13          功能：延时1ms～256ms
  14          参数：
  15                  t>0时，延时t毫秒
  16                  t=0时，延时256毫秒
  17          */
  18          void Delay(unsigned char t)
  19          {
  20   1              do
  21   1              {
  22   2                      TH0 = 0xFC;
  23   2                      TL0 = 0x66;     
  24   2                      TR0 = 1;
  25   2                      while ( !TF0 );
  26   2                      TR0 = 0;
  27   2                      TF0 = 0;
  28   2              } while ( --t != 0 );
  29   1      }
  30          
  31          
  32          void main()
  33          {
  34   1              unsigned char t;
  35   1              TMOD &= 0xF0;
  36   1              TMOD |= 0x01;
  37   1              t = 0x01;
  38   1              for (;;)
  39   1              {
  40   2                      Delay(100);
  41   2                      XBYTE[0xE800] = ~t;
  42   2                      if ( (t & 0x80) == 0 )
  43   2                      {
  44   3                              t <<= 1;
  45   3                      }
  46   2                      else
  47   2                      {
  48   3                              t <<= 1;
  49   3                              t++;
  50   3                      }
  51   2              }
  52   1      }
  53          


C51 COMPILER V7.10   MAIN                                                                  09/22/2007 22:08:39 PAGE 2   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     53    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)