#define exit(i)  XCEXIT(i)

#define TSSEMAPHORENAME         "TrackSalve Data Hook"
#define TD_VERSION1_2           33
#define TD_REVISION1_2          127
#define TD_VERSION1_3           34
#define TD_REVISION1_3          1

#define PUBCLR                  (MEMF_PUBLIC|MEMF_CLEAR)

/*  Program return codes  */

#define ZERO                    0
#define WARNING                 5
#define SERIOUS                 10
#define FAILURE                 20

/*  Secondary result codes  */

#define E_CMDLINE               -41
#define E_ALLOCMEM              -42
#define E_INTUITION             -43
#define E_RTAG                  -44
#define E_TD_VERSION            -45
#define E_LOSTPC                -47


/*--    The findable structure.  We put it in the semaphore list. */

struct TSHook{
  struct SignalSemaphore TSH_Semaphore;
  struct TSControl      *TSH_TSControl;
  ULONG                  TSH_Version;
};

/*--    The UnitData structure contains data of interest for a Trackdisk unit task. */

struct UnitData{
  struct IOExtTD         UD_TDReq;
  struct TSControl      *UD_TSControl;
  char                  *UD_ReturnTD;
  APTR                   UD_Userdata;
  UBYTE                  UD_Cmd0;
  UBYTE                  UD_Cmd1;
  UWORD                  UD_SavedL;
  UWORD                  UD_SavedD;
};

/*--    The global control structure.  It contains data concerning shared items between all TD-tasks. */

struct TSControl{
  struct TSHook         *TSC_TSHook;
  struct UnitData       *TSC_UnitData[NUMUNITS];
  struct UnitData        TSC_UDAlloc[NUMUNITS];
  struct Resident       *TSC_TDTag;
  ULONG                  TSC_TDCodeSize;
  struct Resident       *TSC_TSTag;
  char                  *TSC_TSCode;
  ULONG                  TSC_TSCodeSize;
  char                  *TSC_Buffer;
  UBYTE                  TSC_InUse;
  UBYTE                  TSC_Salve;
  UBYTE                  TSC_Verify;
  UBYTE                  TSC_AvailUnits;
  struct SignalSemaphore TSC_OwnBuffer;
  struct Library        *TSC_IntuBase;
  ULONG                  TSC_Size;
};

/*  Bits of the UD_Command, UD_PreCmd and UNIT_pad */

#define B_READONLY              0
#define F_READONLY              (1<<B_READONLY)
#define B_NOCLICK               1
#define F_NOCLICK               (1<<B_NOCLICK)
#define B_SALVE                 2
#define F_SALVE                 (1<<B_SALVE)
#define B_VERIFY                3
#define F_VERIFY                (1<<B_VERIFY)

#define B_RAM                   6
#define F_RAM                   (1<<B_RAM)
#define B_TERM                  7
#define F_TERM                  (1<<B_TERM)

#define FUNCTIONS               (F_RAM+F_VERIFY+F_SALVE+F_NOCLICK+F_READONLY)