#define RAW_MODE 1

#define FRAME_SIZE 2352		// size of a raw sector (bytes)

#define NBLOCK 10			// nr. of blocks (sectors) per buffer

// #define NBUF   8			// nr. of buffers (8 works OK) (1 buffer takes 23520 bytes low DOS memory)

#define SYNCH_SIZE 128

struct ReqHdr {
  BYTE len;
  BYTE unit;
  BYTE command;
  WORD status;
  BYTE reserved[8];
};

struct IOCTLI {
  struct ReqHdr req;
  BYTE descriptor;
  void far *address;
  WORD len;
  WORD secnum;
  void far *ptr;
};

struct DiskInfo {
  BYTE control;
  BYTE lowest;
  BYTE highest;
  DWORD total;
};

struct ReadL {
	struct ReqHdr req;
	BYTE mode;
	void far *address;
	WORD secnum;
	DWORD loc;
	BYTE readmode;
	BYTE skip[2];
	};

struct TrackInfo {
  BYTE control;
  BYTE track;
  DWORD loc;
  BYTE info;
};

struct SEEK {
  struct ReqHdr req;
  BYTE mode;
  DWORD address;
  WORD secnum;
  DWORD loc;
};

struct PlayReq {
  struct ReqHdr req;
  BYTE mode;
  DWORD loc;
  DWORD secnum;
};