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IFB(4) Device Drivers Manual (sparc64) IFB(4)


ifbinextricable frame buffer


ifb* at pci?
wsdisplay* at ifb?


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.


If the ifb frame buffer is used as the console display, a different resolution 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 Resolution Refresh
Identifier 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.


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


The second head of XVR-1200 cards is not supported.
September 3, 2011 OpenBSD-current