Int 62 Fn 00AE  u - Fgdriver V4.02 - "fg_sethpage" - Set Hidden Video Pag  [V]

   AX = 00AEh
   BX = new hidden page (0000h to 003Fh)

Notes: the FGDRIVER functions are rearranged with each major release, but
     their parameters do not change (see #3145 at AX=0000h)
   The specified page must be a physical page or a virtual page

See Also: AX=0043h,AX=00B2h,AX=00B6h