IFB(4) | Device Drivers Manual (sparc64) | IFB(4) |
ifb
—
ifb* at pci?
wsdisplay* at ifb?
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.
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.
September 3, 2011 | OpenBSD-current |