Int E0  R - Real/32 - "mp_alloc" - Allocate Physical Memory                [O]

   CL = B3h
   DX = number of 4K pages to allocate

Return: AX = number of first 4K page allocated, or FFFFh on error

Note:  memory allocated with this function is not automatically freed when
     the process terminates

See Also: INT E0/CL=B4h,INT E0/CL=B5h