cmd:m64config 

Trying History 

Queries 

# m64config -propt

--- OpenWindows Configuration for /dev/fbs/m640 --- OWconfig: machine Video Mode: not set Depth: not set

# m64config -prconf
--- Hardware Configuration for /dev/fbs/m640 ---
ASIC: version 0x9a004754
DAC: version 0x0
PROM: version 106
Card possible resolutions:  720x400x88, 640x480x60, 640x480x72, 640x480x75
        800x600x56, 800x600x60, 800x600x72, 800x600x75, 1024x768x87
        1024x768x60, 1024x768x70, 1024x768x75, 1280x1024x75, 1280x1024x60
        1152x900x66, 1152x900x76, 1280x1024x67, 1280x800x76, 1280x1024x85
        1280x1024x76, 1152x864x75, vga, svga, 1152, 1280, 800x600
        1024x768, 1280x1024, 1152x900
Monitor possible resolutions:  720x400x70, 720x400x88, 640x480x60
        640x480x67, 640x480x72, 640x480x75, 800x600x56, 800x600x60
        800x600x72, 800x600x75, 832x624x75, 1024x768x87, 1024x768x60
        1024x768x70, 1024x768x75, 1152x870x75, 1152x900x66, 1152x900x76
        vga, svga, 1152, 800x600, 1024x768, 1152x900
Possible depths:  8, 24
Current resolution setting: 1152x900x76
Current depth: 8
# m64config -res ?

Modification 

# m64config -depth 24
m64config: Board does not support resolution none
m64config: No changes made; use "nocheck" to force change
# m64config nocheck -depth 16
m64config: Unknown option, nocheck
# m64config -dev /dev/fb -depth 24
m64config: Board does not support resolution none
m64config: No changes made; use "nocheck" to force change
# m64config -res 1152x900x76 -depth 16
m64config: Not enough memory for resolution 1152x900x76 at depth 24
m64config: No changes made; use "nocheck" to force change
# m64config -res 1024x768x75 -depth 16
  -- nok
# m64config -res 800x600x75 -depth 24
[Tip]

!!

/etc/openwin/server/etc/OWconfig got created

# cat /etc/openwin/server/etc/OWconfig
package="SUNWm64cf"
class="XSCREENCONFIG" name="SUNWm640"
    device="/dev/fbs/m640"
    res="800x600x75"
    depth="24";

but still, colors won't work.