ide.h

ｉｄｅ的低层驱动程序。一个工程（ｃｐｌｄ＋ｄｓｐ）的一部分。

extern void IdeStandby(void);
extern void IdeIdle(void);
extern unsigned char IdeReadSector_LBA(  uint  SectorNum,	//要读出数据的扇区号
										 ushort * Read_buffer);
extern unsigned char IdeWriteSector_LBA(  uint  SectorNum,		//要写入数据的扇区号
								   ushort * Write_buffer );



							  		 
struct current_xinxi
{
	unsigned char  type;
	unsigned short cylinder_start;
	unsigned char  head_start;
	unsigned char  sector_start;
	unsigned short cylinder_end;
	unsigned char  head_end;
	unsigned char  sector_end;
};

struct DBR
{
	unsigned short sector_byte_num;	//每扇区字节数
	unsigned char  cu_sector_num;	//每簇扇区数
	unsigned short DBR_FAT_sector;	//保留扇区数(DBR-FAT1之间的扇区数)
	unsigned char  FAT_num;			//FAT表的数目
	unsigned short cd_sector_num;	//每磁道(柱面)扇区数
	unsigned short head_num;		//磁头数
	unsigned int   MBR_size;		//当前分区之前的隐藏扇区数(MBR的大小)
	unsigned int   FAT_size;		//每个FAT表占的扇区数
	unsigned char  start_cu_num;	//根目录的起始簇号
	
};

struct root
{
	char   file_name[8];
	char   file_hz[3];
	
	uchar  file_attrib;

	uchar  year_build;	//文件创建的日期和时间
	uchar  month_build;
	uchar  date_build;
	uchar  hour_build;
	uchar  minute_build;
	
	uchar  year_access;	//文件最后访问的日期
	uchar  month_access;
	uchar  date_access;
	
	uchar  year_amend;	//文件最后修改的日期和时间
	uchar  month_amend;
	uchar  date_amend;
	uchar  hour_amend;
	uchar  minute_amend;
	
	uint   cluster_num_start;//文件入口簇号
	uint   file_size;		 //文件的大小
	
};