SAVAGE(4)						     Kernel Interfaces Manual							 SAVAGE(4)

NAME

       savage - S3 Savage video driver

SYNOPSIS

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

DESCRIPTION

       savage  is an XFree86 driver for the S3 Savage family video accelerator chips.  The savage driver supports PCI and AGP boards with the fol-
       lowing chips:

       Savage3D        (8a20 and 8a21)

       Savage4	       (8a22)

       Savage2000      (9102)

       Savage/MX       (8c10 and 8c11)

       Savage/IX       (8c12 and 8c13)

       ProSavage PM133 (8a25)

       ProSavage KM133 (8a26)

       Twister (ProSavage PN133)
		       (8d01)

       TwisterK (ProSavage KN133)
		       (8d02)

       ProSavage DDR   (8d03)

       ProSavage DDR-K (8d04)

CONFIGURATION DETAILS

       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 "HWCursor" "boolean"

       Option "SWCursor" "boolean"
	      These two options interact to specify hardware or software cursor.  If the SWCursor option is specified,	any  HWCursor  setting	is
	      ignored.	 Thus, either "HWCursor off" or "SWCursor on" will force the use of the software cursor.  On Savage/MX and Savage/IX chips
	      which are connected to LCDs, a software cursor will be forced, because the Savage hardware cursor does not correctly track the auto-
	      matic panel expansion feature.  Default: hardware cursor.

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

       Option "Rotate" "CW"

       Option "Rotate" "CCW"
	      Rotate  the desktop 90 degrees clockwise or counterclockwise.  This option forces the ShadowFB option on, and disables acceleration.
	      Default: no rotation.

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

       Option "LCDClock" "frequency"
	      Override the maximum dot clock.  Some LCD panels produce incorrect results if they are driven at too fast of a frequency.   If  Use-
	      BIOS  is on, the BIOS will usually restrict the clock to the correct range.  If not, it might be necessary to override it here.  The
	      frequency parameter may be specified as an integer in Hz (135750000), or with standard suffixes like "k", "kHz", "M", or	"MHz"  (as
	      in 135.75MHz).

       Option "UseBIOS" "boolean"
	      Enable  or  disable  use	of  the  video BIOS to change modes.  Ordinarily, the savage driver tries to use the video BIOS to do mode
	      switches.  This generally produces the best results with the mobile chips (/MX and /IX), since the BIOS  knows  how  to  handle  the
	      critical	but  unusual timing requirements of the various LCD panels supported by the chip.  To do this, the driver searches through
	      the BIOS mode list, looking for the mode which most closely matches the XF86Config mode line.  Some purists find this scheme  objec-
	      tionable.   If  you would rather have the savage driver use your mode line timing exactly, turn off the UseBios option.  Default: on
	      (use the BIOS).

       Option "ShadowStatus" "boolean"
	      Enables the use of a shadow status register.  There is a chip bug in the Savage graphics engine that can cause a bus lock when read-
	      ing  the	engine status register under heavy load, such as when scrolling text or dragging windows.  The bug affects about 4% of all
	      Savage users.  If your system hangs regularly while scrolling text or dragging windows, try turning this option on.   This  uses	an
	      alternate  method  of  reading the engine status which is slightly more expensive, but avoids the problem.  Default: off (use normal
	      status register).

FILES

       savage_drv.o

SEE ALSO

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

AUTHORS

       Authors include Tim Roberts (timr@probo.com) and Ani Joshi (ajoshi@unixbox.com) for the 4.0 version, and Tim Roberts and  S.  Marineau  for
       the 3.3 driver from which this was derived.

XFree86 							   Version 4.7.0							 SAVAGE(4)