Int 21 Fn E8  - Os/286, Os/386 - Segment Creation                          [E]

   AH = E8h
   AL = type
       00h data segment
       01h data window/alias
       02h real segment
       03h real window/alias
       CX:DX = size in bytes
       SI:BX -> start of desired memory block

       Return: AX = selector
       06h shareable segment
   ???

Return: ???

See Also: AH=E7h"OS/286",AH=E9h"OS/286"