Int 15 Fn BFDE  - Desqview/x 1.02+ - Dvdos4gx.dvr - Unlock ??? Mailbox     [E]

   AX = BFDEh
   BX = 0015h
   CX = index of ??? mailbox
       (0000h-0004h valid, but no range checking done)

Return: AX,BX destroyed

See Also: AX=BFDEh/BX=0014h,AX=BFDEh/BX=0016h