IFB(4) | Device Drivers 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 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.

# SEE ALSO

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

# BUGS

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

September 3, 2011 | Debian