INT 10H 03H: Query Cursor Position and Size

                                                          Compatibility: All
 Expects: AH    03H
          BH    video page number (0-based)
 Returns: CH    cursor starting scan-line
          CL    cursor ending scan-line
          DH    current row (0-based)
          DL    current column (0-based)
    Info: This obtains the current cursor position and the size/shape of
          the cursor for a specified video page.

       BH specifies a video page (use 0 in most cases).  The BIOS maintains
          the cursor position for each video page; they are saved starting
          at 0040:0050.  The cursor size is saved only for the current
          video page, so you may need to maintain it separately if you are
          using a page-switching technique.

    DH,DL and CH,CL return containing cursor information.

See Also: INT 10H 01H (set cursor size)
          INT 10H 02H (set cursor position)
          INT 10H: Video Services