at89c51.lst

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C51 COMPILER V8.08   AT89C51                                                               05/02/2008 18:43:02 PAGE 1   


C51 COMPILER V8.08, COMPILATION OF MODULE AT89C51
OBJECT MODULE PLACED IN at89c51.OBJ
COMPILER INVOKED BY: D:\program files\Keil 3.2\C51\BIN\C51.EXE at89c51.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          unsigned char num;
   3          void delay(void)
   4           { unsigned char i;
   5   1        for(i=0;i<200;i++)
   6   1        {}
   7   1       }
   8          unsigned char keyscan(void)
   9          { unsigned char test,tmp;
  10   1        P1=0xf0;
  11   1        if((P1&0xf0)!=0xf0)
  12   1        {     delay();
  13   2          if((P1&0xf0)!=0xf0)
  14   2              { test=0xfe;
  15   3                while((test&0x10)!=0)
  16   3                {     P1=test;
  17   4                  if((P1&0xf0)!=0xf0)
  18   4                      { tmp=(P1&0xf0)|0x0f;
  19   5                        return(~(test)+~(tmp));
  20   5                      }
  21   4              else test=(test<<1)|0x01;
  22   4                }
  23   3              }
  24   2        }
  25   1        return(0);
  26   1      }
  27          void readkey(unsigned char date)
  28           { switch(date)
  29   1        {     case 0X11: num=0;break;
  30   2              case 0X21: num=1;break;
  31   2              case 0X41: num=2;break;
  32   2              case 0X81: num=3;break;
  33   2              case 0X12: num=4;break;
  34   2              case 0X22: num=5;break;
  35   2              case 0X42: num=6;break;
  36   2              case 0x82: num=7;break;
  37   2              case 0x14: num=8;break;
  38   2              case 0x24: num=9;break;
  39   2              case 0x44: num=10;break;
  40   2              case 0x84: num=11;break;
  41   2              case 0x18: num=12;break;
  42   2              case 0x0: num=15;break;
  43   2        }
  44   1       }
  45          void main(void)
  46          { while(1)
  47   1        {unsigned char a;
  48   2        a=keyscan();
  49   2        readkey(a);
  50   2        P2=num;
  51   2        }
  52   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
C51 COMPILER V8.08   AT89C51                                                               05/02/2008 18:43:02 PAGE 2   

   CODE SIZE        =    188    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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