Information for SiS Users : XF86Config Options
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## 3. XF86Config Options

The following options are of particular interest for the SiS driver. Each of them must be specified in the `svga' driver section of the XF86Config file, within the Screen subsections of the depths to which they are applicable (you can enable options for all depths by specifying them in the Device section).

Option "noaccel"

  By default the XAA (XFree86 Acceleration Architecture) is used. This option will disable the use of the XAA and will enable the old BitBlt acceleration operations. (see below).

Option "hw_clocks"

  On chips 86c202 and later, the default is to use the programmable clock for all clocks. It is possible to use the fixed clocks supported by the chip instead of using this option (manufacturer dependent).

Option "sw_cursor", "hw_cursor"

  The default is for using the hardware cursor.

Option "no_linear"

  By default linear addressing is used on all chips. However this might be broken in some implementations. It is possible to turn the linear addressing off with this option. Note that H/W acceleration and 16/24bpp are only supported with linear addressing.

Option "no_bitblt"

  This option will disable the use of all the BitBLT engine. It is useful for problems related to acceleration problems. In general this will result in a reduced performance.

Option "no_imageblt"

  It is useful for problems related to image writing, and possible stipple acceleration problems. In general this will result in a reduced performance.

Information for SiS Users : XF86Config Options
Previous: Supported chips
Next: Modelines