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Caution: This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.


Graphics driver for TVIA CyberPro chipsets


io-graphics -d tvia [option[,option...]]
            ... &

Runs on:



For the general io-graphics options that can be used with this driver, see io-graphics.

Options specific to this driver:

Specifies the full path to tvia.conf, which is the configuration file for this driver.


The devg-tvia.so driver provides accelerated 2D support for TVIA graphics chipset.

On non-x86 systems, install jumper JP3 on the reference adapter.

You can edit the tvia.conf configuration file to enable devg-tvia.so to run on your board. For more information on the options available, see the configuration file.

You must specify the location of the configuration file to the devg-tvia.so driver via the mode_opts option of io-graphics. For example:

io-graphics -d tvia xres=640,yres=480,bitpp=16,photon,
mode_opts=/etc/photon/config/tvia.conf -pphoton

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 OP's Full
Bitmaps Yes

Video Overlay/Scaler support

Feature Provision
YUV formats Yes (Packed)
RGB formats Yes (RGB 555, 565, 888, 8888)
Up scaling Yes
Down scaling No

Other features

Feature Provision
Hardware Cursor Yes
TV Out (PAL and NTSC) Yes
Video capture Yes
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, 32
800x600 60, 70, 75, 85 8, 15, 16, 24, 32
1024x768 60, 70, 75, 85 8, 15, 16, 24, 32
1152x864 60, 70, 75, 85 8, 15, 16, 24, 32
1280x1024 60, 70, 75 8, 15, 16, 24, 32
1600x1200 60, 70 8, 15, 16, 24, 32



This driver needs the following files available at run time:

Graphics driver utility library.
Software rasterization library.

See also:

io-graphics, crttrap, devgt-iographics, tvia.conf

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