INT 31 P - DPMI 1.0+ - TERMINATE AND STAY RESIDENT
        AX = 0C01h
        BL = return code
        DX = number of paragraphs of DOS memory to reserve (0 or >= 6)
Return: never
Notes:  should only be used if the program will only provide services to
          other DPMI programs
        any protected mode memory remains allocated to the program unless
          explicitly freed before this call
        must first call AX=0C00h or program will simply be terminated
SeeAlso: INT 21/AH=31h