If you have installed CDE and would like CDE to appear on the PGX32 display, you need to modify your /etc/dt/config/Xservers file. If the SunForum card is the console device, you do not need to modify the Xservers file.
:0 Local Local_uid@console root /usr/openwin/bin/Xsun \ :0 -dev /dev/fbs/gfxp0 -nobanner
If for some reason the name of your SunForum device is something other than gfxp0, you need to substitute the correct name in the file.
You can add any other desired command line arguments to the end of this line. For example, you can start CDE on multiple displays.
The following example configuration displays CDE on the display named /dev/fbs/gfxp0 and uses the device named /dev/fbs/m640 (the built-in graphics device on the Sun Ultra 5 and Sun Ultra 10 systems) as a secondary frame buffer.
:0 Local Local_uid@console root /usr/openwin/bin/Xsun \ :0 -dev /dev/fbs/gfxp0 -dev /dev/fbs/m640