Parameters

   o  robot_info - This is the address of a robot_info_t structure
      initialized using mrd_startup(3mrd) or mrd_show(3mrd). This
      data structure contains the element starting address and
      counts for each type of element, which are needed to map an
      absolute element to the correct zero relative address and
      type.

   o  dev_status - The dev_status is the address of a dev_status_
      t structure, which is used to pass back detailed error
      information in the event of a command failure.

   o  os_status - When mrd_request_sense(3mrd) is used directly
      by an application, this argument should be MRD_CHECK_SENSE,
      or the operating system specific error code that indicates a
      device failure. On Digital UNIX this is EIO.