12345678.lst

学习单片机的程序集

C51 COMPILER V6.12  12345678                                                               05/28/2005 21:33:48 PAGE 1   


C51 COMPILER V6.12, COMPILATION OF MODULE 12345678
OBJECT MODULE PLACED IN .\12345678.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\12345678.C DEBUG OBJECTEXTEND

stmt level    source

   1          
   2          
   3          
   4          #include <reg51.h>
   5          #include <intrins.h>
   6          
   7          unsigned char data dis_digit;
   8          unsigned char code dis_code[11]={0xc0,0xf9,0xa4,0xb0,	// 0, 1, 2, 3
   9          				0x99,0x92,0x82,0xf8,0x80,0x90, 0xff};// 4, 5, 6, 7, 8, 9, off 
  10          unsigned char data dis_buf[8];
  11          unsigned char data dis_index;
  12          
  13          void main()
  14          {
  15   1      	P0 = 0xff;
  16   1      	P2 = 0xff;
  17   1      	TMOD = 0x01;
  18   1      	TH0 = 0xFC;
  19   1      	TL0 = 0x17;
  20   1      	IE = 0x82;
  21   1      
  22   1      	dis_buf[0] = dis_code[0x1];
  23   1      	dis_buf[1] = dis_code[0x2];
  24   1      	dis_buf[2] = dis_code[0x3];
  25   1      	dis_buf[3] = dis_code[0x4];
  26   1      	dis_buf[4] = dis_code[0x5];
  27   1      	dis_buf[5] = dis_code[0x6];
  28   1      	dis_buf[6] = dis_code[0x7];
  29   1      	dis_buf[7] = dis_code[0x8];
  30   1      	
  31   1      	dis_digit = 0xfe;
  32   1      	dis_index = 0;
  33   1      	
  34   1      	TR0 = 1;
  35   1      	while(1);
  36   1      
  37   1      }
  38          
  39          void timer0() interrupt 1
  40          // 定时器0中断服务程序, 用于数码管的动态扫描
  41          // dis_index --- 显示索引, 用于标识当前显示的数码管和缓冲区的偏移量
  42          // dis_digit --- 位选通值, 传送到P2口用于选通当前数码管的数值, 如等于0xfe时,
  43          //				选通P2.0口数码管
  44          // dis_buf   --- 显于缓冲区基地址	
  45          {
  46   1      	TH0 = 0xFC;
  47   1      	TL0 = 0x17;
  48   1      	
  49   1      	P2 = 0xff;							// 先关闭所有数码管
  50   1      	P0 = dis_buf[dis_index];			// 显示代码传送到P0口
  51   1      	P2 = dis_digit;						// 
  52   1      
  53   1      	dis_digit = _crol_(dis_digit,1);	// 位选通值左移, 下次中断时选通下一位数码管
  54   1      	dis_index++;						// 
  55   1      					
C51 COMPILER V6.12  12345678                                                               05/28/2005 21:33:48 PAGE 2   

  56   1      	dis_index &= 0x07;			// 8个数码管全部扫描完一遍之后，再回到第一个开始下一次扫描
  57   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    128    ----
   CONSTANT SIZE    =     11    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =     10    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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