main.lst

一个基于单片机proteus仿真8255并行口扩展实例

C51 COMPILER V7.50   MAIN                                                                  10/04/2005 11:58:05 PAGE 1   


C51 COMPILER V7.50, 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          #include<regx52.h>
   2          #include<intrins.h>
   3          #include<absacc.h>
   4          #define uchar unsigned char
   5          #define uint unsigned int
   6          #define PA XBYTE[0x3fff]
   7          #define PB XBYTE[0x7fff]
   8          #define PC1 XBYTE[0xbfff]
   9          #define CTL XBYTE[0xffff]
  10          sbit reset=P2^5;
  11          void delay(uchar t);
  12          void display();
  13          void main()
  14          {
  15   1       EA=1;
  16   1       ET0=1;
  17   1       TMOD=0x01;
  18   1       reset=1;
  19   1       _nop_();
  20   1       reset=0;
  21   1       CTL=0x80;     //写8255控制字，设置PA,PB,PC为输出口
  22   1       while(1)
  23   1       {
  24   2        display();}
  25   1      }
  26          void display()
  27          {
  28   1       uchar outdata=0xfe,i;
  29   1       for(i=0;i<8;i++)
  30   1        {PA=outdata;
  31   2         delay(200);
  32   2         outdata=_crol_(outdata,1);
  33   2        }
  34   1        PA=0xff;
  35   1        outdata=0xfe;
  36   1       for(i=0;i<8;i++)
  37   1        {PB=outdata;
  38   2         delay(200);
  39   2         outdata=_crol_(outdata,1);}
  40   1        PB=0xff;
  41   1        outdata=0xfe;
  42   1       for(i=0;i<8;i++)
  43   1        {PC1=outdata;
  44   2         delay(200);
  45   2         outdata=_crol_(outdata,1);}
  46   1       
  47   1        PC1=0xff;
  48   1      }
  49          
  50          void delay(uchar t)
  51          {
  52   1        for(;t>0;t--)
  53   1         {
  54   2               TH0=(65536-1000)/256;
  55   2               TL0=(65536-1000)%256;
C51 COMPILER V7.50   MAIN                                                                  10/04/2005 11:58:05 PAGE 2   

  56   2               TR0=1;
  57   2               while(TF0==0) ;
  58   2               TF0=0;
  59   2          }
  60   1         TR0=0;
  61   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    174    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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