CDC_SELECT_SPEED
if (!CDROM_CAN(CDC_SELECT_SPEED))
CDC_SELECT_SPEED, info, &pos, CTL_CAPABILITY))
ENSURE(cdo, select_speed, CDC_SELECT_SPEED);
(CDC_CLOSE_TRAY|CDC_OPEN_TRAY|CDC_LOCK|CDC_SELECT_SPEED| \
CDC_SELECT_DISC | CDC_SELECT_SPEED |