INT 2F U - Quarterdeck RPCI - MANIFEST v1.0+ - INSTALLATION CHECK
        AX = D201h
        BX = 4D41h ("MA")
        CX = 4E49h ("NI")
        DX = 4645h ("FE")
Return: BX = 5354h ("ST")
Note:   AH=D2h is the default multiplex number, but any value in the range
          D2h-FFh and then C0h-D1h may be used (see AX=D200h for details)
SeeAlso: AX=D200h

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