FDIOC
#define FDIOGCHAR (FDIOC|51) /* GetCharacteristics */
#define FDIOSCHAR (FDIOC|52) /* SetCharacteristics */
#define FDEJECT (FDIOC|53) /* Eject floppy disk */
#define FDGETCHANGE (FDIOC|54) /* Get diskchng stat */
#define FDGETDRIVECHAR (FDIOC|55) /* Get drivechar */
#define FDSETDRIVECHAR (FDIOC|56) /* Set drivechar */
#define FDGETSEARCH (FDIOC|57) /* Get search tbl */
#define FDSETSEARCH (FDIOC|58) /* Set search tbl */
#define FDIOCMD (FDIOC|59) /* Floppy command */
#define FDRAW (FDIOC|70) /* ECDstyle genericcmd */
#define FDDEFGEOCHAR (FDIOC|86) /* restore default geometry */