#define GetDriverGestaltSyncResponse(a) ((DriverGestaltSyncResponse *)(&((a)->driverGestaltResponse)))


enum {
 kmDriverGestaltEnableMask   =1
};

enum {
kDriverGestaltCode=1
};

struct DriverGestaltParam{
int ioVRefNum;
int csCode;
int ioCRefNum;
int driverGestaltSelector;
int driverGestaltResponse;
};
typedef struct DriverGestaltParam DriverGestaltParam;