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

   AX = 8106h
   DX = flags (see #2896)
   ES:DI -> Extended DMA descriptor structure (see #2893,#2894) returned
         by AX=8105h

Return: CF clear if successful
   CF set on error
       AL = error code (see #2889)

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

Bitfields for VDS flags:
Bit(s) Description (Table 2896)
 0-5   reserved (zero)
 6 EDDS contains page table entries
 7 EDDS may contain not-present pages (entry = 0000h)
 8-15  reserved (zero)