The Software Release Notes for the NH6800 Turbo includes how to set up the
boot device in console mode.  There are a few inaccuracies to clear up:

In Section 4.6.1. on page 24, Console Processor fd Command Format, the fields
listed on the "fd" line are:

#> fd dev(t,b,c,u,1)

   where
        dev is the device (dsk for disk devices, mt for tape devices)
        t is the bus type (0 = PCI device, 1 = VME device)
        b is the bus number (if t=0, b=CPU or GM position; if t=1, b=0)
        c is the slot number (if t=0, c=0; if t=1, c=controller number)
        u is the SCSI unit number
        1 is the partition number (1 is required for tape)

At the bottom of the list explaining each field is "lun - (not shown)
designates logical unit number (not used)."

What it doesn't show is that there are actually 6 fields associated with the
fd command, so the SRN should have shown the additional field:

#> fd dev(s,b,c,u,1,b)

   where
        dev is the device (dsk for disk devices, mt for tape devices)
        s is the scsi logical unit number (0 for VIA0, 1 for VIA1, etc.)
        t is the bus type (0 = PCI/NCR, 1 = VME/VIA)
        b is the bus number  (same as above)
        c is the slot number (same as above)
        u is the SCSI unit number (5 is typical for tape)
        1 is the partition number (1 is required for tape)

For example, if you were booting from tape on the first logical tape unit on
the VME bus, the command would be:

     fd mt(0,0,0,0,5,1)

If you were booting from a disk on the VME bus controller 1, the command
would be:

     fd dsk(1,0,0,0,0,0)

Because everything after the second 0 is 0, you can shorten this to:

     fd dsk(1,0)