逐行扫描法.lst

基于c51的484按键扫描源程序 适合初学者

C51 COMPILER V8.05a   逐行扫描法                                                           08/15/2008 13:52:18 PAGE 1   


C51 COMPILER V8.05a, COMPILATION OF MODULE 逐行扫描法
OBJECT MODULE PLACED IN 逐行扫描法.OBJ
COMPILER INVOKED BY: D:\Program Files\Keil\C51\BIN\C51.EXE 逐行扫描法.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <reg51.h>
   2          
   3          unsigned int A[16]={0x77,0x7b,0x7d,0x7e,0xb7,0xbb,0xbd,0xbe,0xd7,0xdb,0xdd,0xde,0xe7,0xeb,0xed,0xee};
   4          
   5          void main(void)
   6          {
   7   1              unsigned int B[4]={0x7f,0xbf,0xdf,0xef};
   8   1              unsigned int i,j,i1;
   9   1              while(1)
  10   1              {
  11   2                      for(i=0;i<4;i++)
  12   2                      {
  13   3                              P0=B[i];
  14   3                      if((P0&0x0f)!=0x0f)
  15   3                              {
  16   4                                      for(j=0;P0!=A[j];j++);
  17   4                                      for(i1=0;i1<1000;i1++); 
  18   4                                      while((P0&0x0f)!=0x0f);
  19   4                                      while((P0&0x0f)!=0x0f);
  20   4                                      P1=j;
  21   4                              } 
  22   3                      }
  23   2              }
  24   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    115    ----
   CONSTANT SIZE    =      8    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     32       8
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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