Int 67 Fn DE04  - Virtual Control Program Interface - Allocate A 4k Page   [E]

   AX = DE04h

Return: AH = 00h successful
       EDX = physical address of allocated page
   AH nonzero: failed

Notes: the client program is responsible for freeing all memory allocated
     with this call before terminating
   also available in protected mode by calling the protected-mode VCPI
     entry point

See Also: AH=3Fh,AX=DE03h,AX=DE05h