snow.lst

8255是8051外部扩展口

C51 COMPILER V8.05a   SNOW                                                                 05/21/2008 19:43:38 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE SNOW
OBJECT MODULE PLACED IN snow.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE snow.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      
  16   1       reset=1;
  17   1       delay(20);
  18   1       reset=0;
  19   1       CTL=0x80;     //写8255控制字，设置PA,PB,PC为输出口
  20   1       while(1)
  21   1       {
  22   2        display();}
  23   1      }
  24          void display()
  25          {
  26   1       uchar outdata=0xfe,i;
  27   1       for(i=0;i<8;i++)
  28   1        {PA=outdata;
  29   2         delay(200);
  30   2         outdata=_crol_(outdata,1);
  31   2        }
  32   1        PA=0xff;
  33   1        outdata=0xfe;
  34   1       for(i=0;i<8;i++)
  35   1        {PB=outdata;
  36   2         delay(200);
  37   2         outdata=_crol_(outdata,1);}
  38   1        PB=0xff;
  39   1        outdata=0xfe;
  40   1       for(i=0;i<8;i++)
  41   1        {PC1=outdata;
  42   2         delay(200);
  43   2         outdata=_crol_(outdata,1);}
  44   1       
  45   1        PC1=0xff;
  46   1      }
  47          
  48          void delay(uchar t)
  49          { int i;
  50   1        for(;t>0;t--)
  51   1         for(i=0;i<100;i++);
  52   1        
  53   1      }


C51 COMPILER V8.05a   SNOW                                                                 05/21/2008 19:43:38 PAGE 2   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    170    ----
   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)