ex6-2c.lst

《增强型8051单片机实用开发技术》例程代码

C51 COMPILER V8.18   EX6_2C                                                                11/27/2009 21:24:48 PAGE 1   


C51 COMPILER V8.18, COMPILATION OF MODULE EX6_2C
OBJECT MODULE PLACED IN ex6-2c.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE ex6-2c.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "stc12c5a.h"   //包含STC12C5A60S2单片机的寄存器定义文件
   2          
   3          sbit    P20=P2^0;                                       //定义相关的位
   4          sbit    P21=P2^1;
   5          sbit    P22=P2^2;
   6          sbit    P23=P2^3;
   7          sbit    P24=P2^4;
   8          sbit    P25=P2^5;
   9          sbit    P26=P2^6;
  10          sbit    P27=P2^7;
  11          void main (void) 
  12          {
  13   1                      IT0=1;                                                  //外部中断0为边沿触发方式
  14   1                      EX0=1;                                                  //允许外部中断0
  15   1                      EA =1;                                                  //允许总的中断
  16   1                      P2=0xAA;                                                //灯全灭
  17   1                      while(1);
  18   1      }
  19          void INT0_ISR (void) interrupt 0                //外部中断函数
  20          {
  21   1                      P21=~P20;
  22   1                      P23=~P22;
  23   1                      P25=~P24;
  24   1                      P27=~P26;
  25   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     36    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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