speaker.lst

音响效果程序

C51 COMPILER V6.23a  SPEAKER                                                               02/21/2005 22:30:46 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE SPEAKER
OBJECT MODULE PLACED IN speaker.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE speaker.c

stmt level    source

   1          #include <reg52.h>
   2          #define SpeakerBit      0xdf
   3          void SpeakerOpen( void ){ P2 &= SpeakerBit; }
   4          void SpeakerClose( void ){ P2 |= SpeakerBit^0xff; }
   5          
   6          void Midi( unsigned char sound, unsigned char time )                    //一个工程项目必须有一个main函数,并且只能有一个main
             -函数
   7          {
   8   1              char loop;
   9   1              code unsigned int pn[]={        8*105,
  10   1                                                      4*200, 4*178, 4*159, 4*150, 4*133, 4*118, 4*105,
  11   1                                                      2*200, 2*178, 2*159, 2*150, 2*133, 2*118, 2*105,
  12   1                                                      1*200, 1*178, 1*159, 1*150, 1*133, 1*118, 1*105, 100};
  13   1      
  14   1              for( loop=0; loop<time; ++loop)
  15   1              {
  16   2                      unsigned int lp, len;
  17   2                      len = 30000/pn[sound];
  18   2                      for( lp=0; lp<len; lp++ )
  19   2                      {
  20   3                              unsigned int nlp;
  21   3                              SpeakerOpen();
  22   3                              for(nlp=pn[sound]; nlp>0; --nlp );
  23   3                              SpeakerClose();
  24   3                              for(nlp=pn[sound]; nlp>0; --nlp );
  25   3                      }
  26   2              }
  27   1      }
  28          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    185    ----
   CONSTANT SIZE    =     46    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       7
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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