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Graphics driver for Chips and Technologies graphics chipsets


io-display [-vf]
           -d vid=[0x]vendor_id,did=[0x]device_id[,deviceindex=index]
           [-c config_file] [-p priority]

Runs on:





For the general io-display options that you can use with this driver, see io-display.

You can set configuration options that are specific to this driver by using the modeopts setting in display.conf:

The full path to the configuration file for the driver. For example chips.conf is located in /usr/photon/config by default so that modeopts=/usr/photon/config/chips.conf.


The driver provides accelerated 2D support for Chips and Technologies graphics chipsets.

You can edit the configuration file to enable to run on your board. For more information on the options available, see the sample configuration file, /usr/photon/config/chips.conf.

If you use a configuration file for this driver, you must use the modeopts setting in your display.conf to specify its location.

Supported chipsets

Acceleration features

Feature Provision
Solid fills Yes
Bresenham lines No
Pattern fills Yes
Polygons No
Onscreen blitting Yes
Offscreen blitting Yes
Chroma-keyed blitting Yes
Alpha blending No
Raster OPs Full
Bitmaps No

Video Overlay/Scaler support

Feature Provision
YUV formats Yes
RGB formats Yes
Up scaling Yes

Other features

Feature Provision
Hardware Cursor Yes
TV Out No
Video capture No
DPMS (power saving) Yes

Resolution and refresh support

Display size (pixels): Refresh rate(Hz): Color depth (bits per pixel):
640x480 60, 72, 75, 85 8, 15, 16, 24
800x600 60, 70, 75, 85 8, 15, 16, 24
1024x768 60, 70, 75, 85 8, 15, 16, 24
1152x864 60, 70, 75, 85 8, 15, 16, 24
1280x800 60, 72, 75, 85 8, 15, 16, 24
1280x1024 60, 72, 75, 85 8, 15, 16, 24
1440x900 60, 72, 75, 85 8, 15, 16, 24
1600x1200 60, 72, 75, 85 8, 15, 16, 24



This driver needs the following at run time:
Software rasterization library.

See also: