Get ???

        Entry:
          AX = E301h
        Return:
          DX:BX -> ???

        Note:   ANARKEY.COM is a commandline recall program by Steven Calwas

        Format of returned data structure:

        Offset  Size    Description
         -7   7 BYTEs   signature ('ANARKEY')
         00h    WORD    ??? (I see 0001h in v2.0)
         02h    WORD    ??? (I see 0001h in v2.0)
         04h    WORD    ??? (I see 0 in v2.0)
         06h    WORD    PSP segment of next program loaded