1920x1200@70 is the highest resolution a Creator FFB frame buffer can support.
However, it is not supported by all FFB frame buffers and monitors.  It is
currently supported only by the Creator3D series 2 (FFB2) frame buffer, and
then only with Sun's 24-inch HDTV monitor.

As described in the ffbconfig manpage, you can determine which resolutions
your FFB framebuffer supports with your monitor by using the command
"ffbconfig -res ?":

  Some video-modes are supported only on certain revisions of FFB.  Also,
  some video-modes, supported by FFB, may not be supported by the monitor.
  The list of video-modes supported by the FFB device and the monitor can be
  obtained by running ffbconfig with the -res ? option.

All of the video modes supported by various FFB frame buffers are:
  ______________________________
 | 1024x768x60                 |
 | 1024x768x70                 |
 | 1024x768x75                 |
 | 1024x768x77                 |
 | 1024x800x84                 |
 | 1152x900x66                 |
 | 1152x900x76                 |
 | 1280x800x76                 |
 | 1280x1024x60                |
 | 1280x1024x67                |
 | 1280x1024x76                |
 | 960x680x112s    (stereo)    |
 | 960x680x108s    (stereo)    |
 | 640x480x60                  |
 | 640x480x60i     (interlaced)|
 | 768x575x50i     (interlaced)|
 | 1440x900x76     (hi-res)    |
 | 1600x1000x66    (hi-res)    |
 | 1600x1000x76i   (hi-res)    |
 | 1600x1280x76    (hi-res)    |
 | 1920x1080x72    (hi-res)    |
 | 1920x1200x70    (hi-res)    |
 |_____________________________|

Note that, as described above, not all FFB frame buffers support all
of these resolutions.

With Sun's 24-inch HDTV monitor the FFB2 supports these additional
resolutions:

  1920 x 1200 single-buffered
  1600 x 1000 single-buffered
  1440 x  900 single-buffered
  1280 x  800 single-buffered or double-buffered

This frame buffer has 15 MB RAM, which is normally used to provide
96 bits per pixel.  That's roughly 32 bits each for each of the double
buffers plus 32 for the Z buffer (it's actually more complex than that).

The two display buffers can be combined to give 10 MB to use as a single
display buffer.  However, the Z buffer memory cannot be combined in this
way, which is why you can't have double buffering at higher resolutions.

SOLUTION SUMMARY: