Get Pages owned by Handle                           
  
    | 
       Input  | 
    
       Output  | 
   
  
    | 
       AX  | 
    4Ch | 
      | 
    Error
      Code | 
      | 
    AX | 
   
  
    | 
       BX  | 
      | 
      | 
    Pages
      allocated to Handle | 
    BX | 
   
  
    | 
       CX  | 
      | 
      | 
      | 
      | 
    CX | 
   
  
    | 
       DX  | 
     EMM
      Handle | 
      | 
      | 
    DX | 
   
      Returns number of logical  expanded  memory  pages allocated to a
     specific EMM handle.
     Notes:
     *  This function is upward compatible with EMS and EEMS 3.2.
     *  Programmers should compare the number  returned  in  BX with
        the  maximum  number  of  pages  returned  by  function  42h
        register  DX,  total  number of EMM pages. This should be an
        UNSIGNED comparison, just in case the spec writers decide to
        use  16 bit unsigned numbers (for a  maximum  space  of  one
        gigabyte) instead  of signed numbers (for a maximum space of
        512  megabytes). Unsigned comparisons will work properly  in
        either case.  |