ideidentifieddevice.lst

用C51单片机实现的MP3播放器的c代码程序。

C51 COMPILER V7.20   IDEIDENTIFIEDDEVICE                                                   05/26/2005 07:10:14 PAGE 1   


C51 COMPILER V7.20, COMPILATION OF MODULE IDEIDENTIFIEDDEVICE
OBJECT MODULE PLACED IN ..\..\IDEIDENTIFIEDDEVICE.obj
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE IDEIDENTIFIEDDEVICE.C LARGE BROWSE DEBUG OBJECTEXTEND OBJECT(..\..\IDEIDENT
                    -IFIEDDEVICE.obj)

line level    source

   1          #ifndef _IDEIO_DEFINE
   2           #include "IDEIO.c"
   3          #endif
   4          
   5          BYTE IDEIdentifiedDevice(BYTE DeviceNum);
   6          
   7          BYTE IDEIdentifiedDevice(BYTE DeviceNum)
   8          {
   9   1              register WORD i;
  10   1              register BYTE status=0xff;
  11   1      
  12   1              IDEDevice[DeviceNum].DriverType=0;
  13   1      
  14   1              if (DeviceNum) status=0xb0;else status=0xa0;
  15   1      
  16   1              if (!IDEStatus(IDE_STATUS_BSY,IDE_WAIT,FALSE,255)) return(IDE_ERROR_BSY);
  17   1              if (!IDEStatus(IDE_STATUS_DRDY,IDE_WAIT,TRUE,255)) return(IDE_ERROR_DRDY);
  18   1              IDE_WRITE_LSB(IDE_ADDR_CMD_HEAD,status);
  19   1              IDE_WRITE_LSB(IDE_ADDR_CMD_COMMAND,IDE_CMD_IDENTIFYDEV);                                //写命令
  20   1              if (!IDEStatus(IDE_STATUS_BSY,IDE_WAIT,FALSE,255)) return(IDE_ERROR_BSY);
  21   1              if (!IDEStatus(IDE_STATUS_DRQ,IDE_WAIT,TRUE,255)) return(IDE_ERROR_DRQ);
  22   1              
  23   1              for(i=0;i<512;)
  24   1              {
  25   2                      IDE_READ_WORD(IDE_ADDR_CMD_DATA,DiskBuffer[i++],DiskBuffer[i++]);
  26   2              }
  27   1              IDEDevice[DeviceNum].TotalSectors=*(DWORD *)(DiskBuffer+120);
  28   1              IDEDevice[DeviceNum].TotalSectors=MEMSwap32(IDEDevice[DeviceNum].TotalSectors);
  29   1              IDEDevice[DeviceNum].DriverType=DRIVER_TYPE_HDD;
  30   1              return(0);
  31   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    312    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----       2
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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