Int 67 Fn 51  - LIM EMS 4.0 - Reallocate Pages                             [m]

   AH = 51h
   DX = handle
   BX = number of pages to be allocated to handle

Return:    AH = status (00h,80h,81h,83h,84h,87h,88h) (see below)
   BX = actual number of pages allocated to handle

Values for status:
 00h   successful
 80h   internal error
 81h   hardware malfunction
 83h   invalid handle
 84h   undefined function requested
 87h   more pages requested than present in system
 88h   more pages requested than currently available
 8Fh   undefined subfunction
 90h   undefined attribute type
 91h   feature not supported
 A0h   no such handle name
 A1h   duplicate handle name