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Caution: This version of this document is no longer maintained.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 Silicon Motion Lynx chipset


io-graphics -d smi7xx [option[,option...]]
            ... &

Runs on:

ARM (XScale), MIPS, PowerPC, x86, SH4


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 smi7xx.conf, which is the configuration file for this driver. See smi7xx.conf for a list of parameters that can be configured.


The devg-smi7xx.so driver provides accelerated 2D support for the specified graphics chipset.

You can edit the smi7xx.conf configuration file to enable devg-smi7xx.so to run on your board. Follow the editing instructions in this file to specify the correct configuration for the required display mode. (For a more detailed explanation of the display settings, see the appropriate Silicon Motion documentation.)

You must specify the location of the configuration file to the devg-smi7xx.so driver via the mode_opts option of io-graphics, like this example:

io-graphics -d smi7xx xres=640,yres=480,bitpp=16,photon,
mode_opts=/etc/config/smi7xx.conf -pphoton

Supported chipsets

Acceleration features

Feature Provision
Solid fills Yes
Pattern fills No
Onscreen blitting Yes
Offscreen blitting Yes
Chroma-keyed blitting Yes
Alpha blending No
Raster OP's Full

Video Overlay/Scaler support

Feature Provision
YUV formats Yes
RGB formats Yes
Up scaling Yes
Down scaling No

Other features

Feature Provision
Hardware Cursor Yes
TV Out No
Video capture Yes
DPMS (power saving) Yes
Layer Support 3 layers

Resolution and refresh support

Display sixe (pixels) Refresh rate(Hz) Color depth (bits per pixel)
640x480 60 8, 15, 16, 24
800x600 60 8, 15, 16, 24
1024x768 60 8, 15, 16, 24



This driver needs the following files available at run time:

Graphics driver utility library.
Software rasterization library.

See also:

io-graphics, crttrap, devgt-iographics

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