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SIS(4)			     XFree86			   SIS(4)



NAME

       sis - SiS video driver


SYNOPSIS

       Section "Device"
	 Identifier "devname"
	 Driver "sis"
	 ...
       EndSection


DESCRIPTION

       sis  is	an XFree86 driver for SiS video cards. The driver
       is accelerated, and provides support for 8, 16 and 24 col
       ordepths.  XVideo,  Render  and	other extensions are sup
       ported as well.


SUPPORTED HARDWARE

       The sis driver supports PCI and AGP video cards	based  on
       the following chipsets:

       SIS5597 SIS5598 SIS530 SIS6326 SIS300 SIS540 SIS630


CONFIGURATION DETAILS

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

       The  driver  will  auto-detect  the amount of video memory
       present for all chips, but in the 6326 case, it will limit
       the  memory size to 4MB. This is because of a bug (in docs
       at least). You can  override  this  using  the  "VideoRAM"
       option  in  the device section if your board has more than
       4MB and you need to use it (maybe with cursor problems).

       If you have problems getting high resolutions  because  of
       dot  clock  limitations,	 try using the "DacSpeed" option,
       also in the device section.

       The following driver Options are supported:

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

       Option "HWCursor" "boolean"
	      Enable or disable the HW cursor. Default: on.

       Option "SWCursor" "boolean"
	      The opposite of HWCursor. Default: off.

       Option "NoXVideo*q "boolean"
	      Disable  XV  (XVideo)  extension	support. Default:
	      off.




4.2.0			     Version				1





SIS(4)			     XFree86			   SIS(4)


       Option "SetMClk" "integer"
	      Set  the	memory	clock.	Value  in  MHz.	 Default:
	      autodetect.

       Option "PciRetry" "boolean"
	      Enable or disable PCI retries.  Default: on.

       Option "TurboQueue" "boolean"
	      Enable  or  disable  TurboQueue mode.  Default: off
	      for SIS530, on for the others

       Option "FastVram" "boolean"
	      Enable or disable FastVram mode.	Default: on.

       Option "Rotate" "CW"
	      Rotate the display clockwise. This mode is unaccel
	      erated,  and  uses  the  Shadow Frame Buffer layer.
	      Default: no rotation.

       Option "Rotate" "CCW"
	      Rotate the display counterclockwise. This	 mode  is
	      unaccelerated,  and  uses	 the  Shadow Frame Buffer
	      layer.  Default: no rotation.

       Option "ForceCRT2Type" "string"
	      Force display type to  one  of:  TV,  LCD	 or  VGA.
	      Default: auto detect.

       Option "ShadowFB" "boolean"
	      Enable  or  disable  use	of the shadow framebuffer
	      layer. Default: off.

       Option "NoXVideo" "boolean"
	      Enable or disable use of the video scaler. Default:
	      off.

       Option "VESA" "boolean"
	      Force  use  of  VESA BIOS initialization on or off.
	      Default: If option is not set: chipset dependent.

       Option "MaxXFBMem" "integer"
	      Amount of video memory to use for X. This option is
	      useful  to  reserve some memory from the top of the
	      video memory for 3D. Under Linux 3D memory is  cur
	      rently   handled	 by   the  sisfb  kernel  driver.
	      Default: use all video memory for X.


SEE ALSO

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


AUTHORS

       Authors include: Alan Hourihane, Mike Chapman, Juanjo San
       tamarta, Mitani Hiroshi,	 David	Thomas,	 Sung-Ching  Lin,
       Ademar Reis



4.2.0			     Version				2