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-Lite, Expert3D,
     XVR-500, XVR-600 and XVR-1200 boards.  It does not provide direct device
     driver entry points but makes its functions 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:

     Mode identifier    Resolution    Refresh
                                      Rate (Hz)
     r640x480x60        640x480       60
     r640x480x60i       640x480       60         Composite sync
     r768x575x50i       768x575       50
     r1024x768x60       1024x768      60         Composite sync
     r1024x768x70       1024x768      70
     r1024x768x75       1024x768      75
     r1024x768x77       1024x768      77
     r1024x800x84       1024x800      84         Composite sync
     r1152x900x66       1152x900      66         Composite sync
     r1152x900x76       1152x900      76         Composite sync
     r1280x800x76       1280x1024     76
     r1280x1024x60      1280x1024     60
     r1280x1024x67      1280x1024     67         Composite sync
     r1280x1024x75      1280x1024     75
     r1280x1024x76      1280x1024     76         Composite sync
     r1280x1024x85      1280x1024     85
     r1440x900x76       1440x900      76         Composite sync
     r1600x1000x66      1600x1000     66
     r1600x1000x76      1600x1000     76         Composite sync
     r1600x1280x76      1600x1280     76
     r1792x1344x75      1792x1344     75
     r1920x1080x72      1920x1080     72         Composite sync
     r1920x1200x70      1920x1200     70
     r1920x1200x75      1920x1200     75

     Modes with the suffix letter `i' are interlaced.

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

BUGS
     The second head of XVR-1200 cards is not supported.

OpenBSD 4.7                    January 21, 2009                              1
