Int 2F Fn 2780  U - Novell Dos 7 - Emm386.exe - Multitasking Api - Availa  [m]

   AX = 2780h
   CL = function (07h-0Fh)
   ???

Return: ???

Notes: called by DPMS.EXE and EMM386.EXE
   the handlers for each of these functions may be set individually by
     one of the subfunctions of AX=2780h/CL=01h; the default handlers
     return with all registers unchanged
   this API is only available if AX=12FFh/BX=0EDCh returns successfully;
     because the request is handled on the initial trap to the memory
     manager caused by INT instructions, this API must be invoked with
     an actual INT 2F instruction instead of some simulation such as a
     far call to the address in the interrupt vector table

See Also: AX=12FFh/BX=0EDCh,AX=2780h/CL=01h,AX=2780h/CL=02h,AX=2780h/CL=03h