delay.lst

hd7279接口芯片适用于扩展键盘和led

C51 COMPILER V8.02   DELAY                                                                 05/02/2009 18:09:26 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE DELAY
OBJECT MODULE PLACED IN delay.OBJ
COMPILER INVOKED BY: D:\Program Files\keil\C51\BIN\C51.EXE delay.c ROM(SMALL) BROWSE DEBUG OBJECTEXTEND SRC(.\delay.SRC)

line level    source

   1          #include<intrins.h>
   2          void long_delay(void)
   3          {
   4   1              #pragma asm
   5   1              LONGDELAY:      MOV R5,#125//延时约250us
   6   1                                      DJNZ R5,$
   7   1              #pragma endasm
   8   1      }
   9          void short_delay(void)
  10          {
  11   1              #pragma asm
  12   1              SHORTDELAY:     MOV R6,#50 //延时约100us
  13   1                                      DJNZ R6,$
  14   1              #pragma endasm
  15   1      }
  16          void delay1ms(unsigned int ms)
  17          {
  18   1              unsigned char i,j;
  19   1              for(i=0;i<ms;i++)
  20   1                      for(j=0;j<200;j++) //执行时间约1ms
  21   1                      {
  22   2                              _nop_();
  23   2                              _nop_();
  24   2                      }
  25   1      }                        


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     35    ----
   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)