(Alpha Galaxy platforms only) The SMCI_FLAGS parameter controls
    operational aspects of SYS$PBDRIVER, the Galaxy Shared Memory
    Cluster Interconnect (SMCI).

    Bits in the bit mask are the following:

    Bit  Mask                        Description

    0    0     0 =  Do not create local communications channels
                    (SYSGEN default). Local SCS communications are
                    primarily used in test situations and are not
                    needed for normal operations. Not creating local
                    communications saves resources and overhead.

               1 =  Create local communications channels.

    1    2     0 =  Load SYS$PBDRIVER if booting into both a Galaxy
                    and a Cluster (SYSGEN Default).

               1 =  Load SYS$PBDRIVER if booting into a Galaxy.

    2    4     0 =  Minimal console output (SYSGEN default).

               1 =  Full console output; SYS$PBDRIVER displays
                    console messages when it creates and tears down
                    communications channels.

    SMCI_FLAGS has the DYNAMIC attribute.