Planar Dome C3i/EX User Manual page 32

To use one or more DOME devices
Replace the second :0 with the -dev option flag and
the appropriate device file.
For example, to use both heads of an DX2 board, change the
line to this:
:0 Local local_uid@console root /usr/openwin/bin/Xsun \
-dev /dev/dx2pci0.0 -dev /dev/dx2pci0.1 -nobanner
If you need to use a different default visual class, add the appropriate
defclass option for each -dev option. See "Using visual classes" on
page 16.
To use a DOME device with a Sun console
Change the line to this:
0 Local local_uid@console root /usr/openwin/bin/Xsun \
-dev /dev/fb -dev /dev/dx2pci0.0 -nobanner
22 | Dome Display