MirOS Manual: via(4)

VIA(4)              UNIX Programmer's Manual               VIA(4)


     via - VIA video driver


     Section "Device"
       Identifier "devname"
       Driver "via"


     via is an XFree86 driver for VIA video chipsets.

     The via driver supports the VIA CLE266 (CLE3122, CLE3022)
     chipset video and the VIA KM400/K8M800 VT3204/5/7204/5
     video, including 2D acceleration and the Xv video overlay
     extensions. Flat panel, TV and VGA outputs are supported.

     Direct rendering 3D is available for this device only using
     XFree86 4.2 builds. If you are interested in porting the DRI
     support to current XFree86 then please see the DRI project
     on sourceforge.net.


     Please refer to XF86Config(5) for general configuration
     details.  This section only covers configuration details
     specific to this driver.

     The following driver Options are supported:

     Option "NoAccel" "boolean"
          Disable or enable acceleration. Default: acceleration
          is enabled.

     Option "HWCursor" "boolean"
          Disable or enable use of hardware cursors. The default
          is enabled.

     Option "SWCursor" "boolean"
          Disable or enable the use of a software cursor. The
          default is disabled.

     Option "ShadowFB" "boolean"
          Use a shadow frame buffer. This is required when rotat-
          ing the display, but otherwise defaults to disabled.

     Option "UseBIOS" "boolean"
          Use the video BIOS to set modes. Default false.

     Option "VideoRAM" "boolean"
          Override the VideoRAM auto detection. This should never
          be needed.

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     Option "Rotate" "string"
          Rotate the display either clockwise ("CW") or counter
          clockwise ("CCW"). Rotation is only supported unac-

     Option "ActiveDevice" "string"
          Specify the active device combination. The choices are
          "CRT,TV", "CRT,LCD", "CRT,DFP", "TV,DFP", "CRT", "LCD",
          or "DFP", for the various supported combinations of VGA
          CRT output, LCD panel output, DFP output and TV output.

     Option "LCDDualEdge" "boolean"
          Use dual edge mode to set the LCD.

     Option "Center" "boolean"
          Disable or enable image centering on DVI displays.

     Option "PanelSize" "string"
          Specify the size (width x height) of the LCD panel
          attached to the system. Sizes 640x480, 800x600,
          1024x768, 1280x1024, and 1400x1050 are supported.

     Option "TVDotCrawl" "boolean"
          Disable or enable dotcrawl.

     Option "TVType" "string"
          Specify TV output format. The driver currently supports
          NTSC and PAL timings only.

     Option "TVOutput" "string"
          Specify which TV output to use. The driver supports
          "S-Video", "Composite", "SC", "RGB" and "YCbCr" out-
          puts. Note that on many boards the composite video port
          is shared with audio out and jumper selected.

     Option "TVVScan" "string"
          Specify whether to underscan the TV image (bordering it
          with black), or overscan it (losing the edges of the

     Option "TVHScale" "string"
          Not yet implemented.

     Option "TVEncoder" "string"
          Specify which TV encoder chip is attached to the sys-
          tem. The driver currently supports the VT1621 and
          VT1622 encoders.

     Option "Refresh" "integer"
          Specify the desired refresh.

     Option "DisableVQ" "boolean"

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          Disable or enable the use of VQ. VQ is enabled by

     Option "Cap0Deinterlace" "string"
          Set the capture 0 port interlace mode to either Bob or

     Option "Cap1Deinterlace" "string"
          Set the capture 1 port interlace mode to either Bob or

     Option "Cap0FieldSwap" "string"
          Perform field swapping on capture port 0.

     Option "DRIXINERAMA" "boolean"
          Set DRI Xinerama mode. Currently unsupported.


     XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7)


     Authors include: ...

XFree86                   Version 4.5.0                         3

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