Library /sys$common/syshlp/sysgen.hlb AUTOCONFIGURE, Parameter  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 adapter-spec

    Specifies the adapter specification (backplane interconnect
    arbitration line) or slot number of the single UNIBUS or MASSBUS
    adapter that is to be configured. The adapter specification can
    be expressed as an integer or with one of the names listed by the
    SYSGEN command SHOW/ADAPTER.

    You can specify AUTOCONFIGURE ALL to configure all standard
    devices attached to the system.

                                 CAUTION

       If you use the AUTOCONFIGURE ALL command on a running system
       with active UNIBUS or Q-bus devices, it could result in
       unpredictable behavior.