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Caution: This version of this document is no longer maintained.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 SM501 chipset


io-graphics -d smi5xx [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 smi5xx.conf, which is the configuration file for this driver.


The devg-smi5xx.so driver provides accelerated 2D support for the Silicon Motion SM501 graphics chip.

You can edit the smi5xx.conf configuration file to enable devg-smi5xx.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-smi5xx.so driver via the mode_opts option of io-graphics For example:

io-graphics -d smi5xx mode_opts=/etc/photon/config/smi5xx.conf

Supported chipsets

Acceleration features

Feature Provision
Solid fills Yes
Bresenham lines Yes
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
RGB formats Yes
Up scaling Yes
Down scaling Yes

Other features

Feature Provision
Hardware Cursor Yes
TV Out No
Video capture Yes
DPMS (power saving) Yes
Layers supported 4

Resolution and refresh support

Display size (pixels): Refresh rate(Hz): Color depth (bits
640x480 60 8, 16, 32
800x600 60 8, 16, 32
1024x768 60 8, 16, 32

Note: Other resolutions and refresh rates may be configured using the driver config file.


This driver needs the following files available at run time:

Graphics driver utility library.
Software rasterization library.

See also:

io-graphics, crttrap, devgt-iographics, smi5xx.conf

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