Int 2F Fn ED11  - Pharlap Dos Extender - Fatal Exit To Real Mode ???       [E]

   AX = ED11h
   BL = 05h
   CX = ???
   DX = ???
   ES:SI -> ??? structure
   SS:SP = new stack ???

Return: ???

Note:  called immediately prior to terminating program with INT 21/AX=4CFFh

See Also: AX=ED00h,AX=ED10h