FFB, the fast frame buffer on ultra machines, can be a primary console device
or a secondary device.  The Fcode device driver can:
 
   -Configure hardware for the selected resolution.
   -Clear the screen to white.
   -Turn on the video.

If you need to configure cgsix as your console device when you have
ffb on board, you can do so with: 

ok setenv output-device /sbus@1f,0/cgsix@1,0

How Do you select the screen resolution for ffb?

1) The screen resolution is selected by monitor ID.
2) The nvaram parameter "output-device" selects the screen resolution.

Ex: ok setenv output-device screen:r960x680x112s

Supported Monitor Resolutions:

Monitor ID    Resolution

0             r1024x768x77
1,3,5,7       r1152x900x66
6             r1152x1024x76
              r1280x1024x67
2,4           r1280x1024x76
svga          r1024x768x60
vesa std      r1024x768x70
xerox         r1024x800xx84
stereo        r960x680x112s
old stereo    r960x680x108s
NTSC          r640x480x60i
PAL           r768x575x50i
Hitachi       r1600x1280x76
HRV (Sony)    r1920x1080x72

How do I check the Fcode PROM version.

1. setenv fcode-debug? true
2. reset
3. dev /SUNW,ffb
4. prt_sccsid
@(#)ffb.1.33 95/05/26Copyright (c) 1994 Sun Microsystems, Inc.
5. device-end

FFB self test

ok test /SUNW,ffb

If the diag-switch?true

You will see the following messages:

Verifying Console Mode for frame buffer board
This will take a few minutes
Verifying frame Buffer Memory used for console mode
This will take about two minutes
FFB Frame Bufferfuncrional test paased
ok

How do I know whether I have a frame buffer or not?

ok show-devs
SUNW, ffb@1e,0

If the system is up and you want know about the ffb
type the following command

prtconf | grep ffb

     ffb, instance #0
If you want to configure various ffb properties use
/usr/sbin/ffbconfig

SOLUTION SUMMARY: