IFB(4)               OpenBSD Programmer's Manual (SPARC64)              IFB(4)

NAME
     ifb - inextricable frame buffer

SYNOPSIS
     ifb* at pci?
     wsdisplay* at ifb?

DESCRIPTION
     The ifb driver attempts to support various frame buffer cards based on
     the 3DLabs `Wildcat' chips, such as the Sun Expert3D and XVR-500 boards.
     It does not provide direct device driver entry points but makes its func-
     tions available via the internal wsdisplay(4) interface.

DISPLAY RESOLUTION
     If the ifb frame buffer is used as the console display, a different reso-
     lution than the default 1152x900 can be selected by changing the OpenPROM
     environment.  To change the default resolution, type the following:

       ok setenv output-device screen:r1280x1024x76

     to change to a 76Hz 1280x1024 resolution.

     The ifb frame buffer accepts the following resolutions:

           screen:r640x480x60
                  VGA 640x480, with a refresh rate of 60Hz.

           screen:r640x480x60i
                  VGA 640x480, with a refresh rate of 60Hz, interleaved.

           screen:r768x575x50i
                  768x575, with a refresh rate of 50Hz, interleaved.

           screen:r1024x768x60
                  Super VGA 1024x768, with a refresh rate of 60Hz.

           screen:r1024x768x70
                  Super VGA 1024x768, with a refresh rate of 70Hz.

           screen:r1024x768x75
                  Super VGA 1024x768, with a refresh rate of 75Hz.

           screen:r1024x768x76
                  Super VGA 1024x768, with a refresh rate of 76Hz.

           screen:r1024x768x77
                  Super VGA 1024x768, with a refresh rate of 77Hz.

           screen:r1024x800x84
                  1024x800, with a refresh rate of 84Hz.

           screen:r1152x900x66
                  Standard 1152x900, with a refresh rate of 66Hz.

           screen:r1152x900x76
                  Standard 1152x900, with a refresh rate of 76Hz.

           screen:r1280x800x76
                  1280x800, with a refresh rate of 76Hz.

           screen:r1280x1024x60
                  High res 1280x1024, with a refresh rate of 60Hz.

           screen:r1280x1024x67
                  High res 1280x1024, with a refresh rate of 67Hz.

           screen:r1280x1024x76
                  High res 1280x1024, with a refresh rate of 76Hz.

           screen:r1280x1024x85
                  High res 1280x1024, with a refresh rate of 85Hz.

           screen:r1440x900x76
                  1440x900, with a refresh rate of 76Hz.

           screen:r1600x1000x66
                  1600x1000, with a refresh rate of 66Hz.

           screen:r1600x1000x76
                  1600x1000, with a refresh rate of 76Hz.

           screen:r1600x1280x76
                  High res 1600x1280, with a refresh rate of 76Hz.

           screen:r1792x1344x75
                  1792x1344, with a refresh rate of 75Hz.

           screen:r1920x1080x72
                  1920x1080, with a refresh rate of 72Hz.

           screen:r1920x1200x70
                  1920x1200, with a refresh rate of 70Hz.

           screen:r1920x1200x75
                  1920x1200, with a refresh rate of 75Hz.

SEE ALSO
     intro(4), pci(4), wscons(4), wsdisplay(4)

BUGS
     Overlay parasitic data appears above the displayed text.  This is espe-
     cially visible in the lower left corner of the display.  This essentially
     makes this driver currently unusable.

     Vertical scrolling could be done in a much smoother way.

OpenBSD 4.4                     March 31, 2008                               2
