Int 4B Fn 8106  - Virtual Dma Specification - Scatter/gather Unlock Regio  [d]

   AX = 8106h
   DX = flags
       bits 0-5 reserved (zero)
       bit 6: EDDS contains page table entries
       bit 7: EDDS may contain not-present pages (entry = 0000h)
       bits 8-15 reserved (zero)
   ES:DI -> Extended DMA descriptor structure (see AX=8102h) returned
       by AX=8105h

Return: CF clear if successful
   CF set on error
       AL = error code (see AX=8102h)

Note:  according to the Microsoft version of the VDS specification, the
     actual scatter/gather list is ignored, while according to the IBM
     version of the specification, "the result of a LOCK operation"
     must be provided to this function

See Also: AX=8104h,AX=8105h