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RENDITION(4)							  RENDITION(4)

NAME
       rendition - Rendition video driver

SYNOPSIS
       Section "Device"
	 Identifier "devname"
	 Driver "rendition"
	 ...
       EndSection

DESCRIPTION
       rendition  is  an  Xorg	driver for Rendition/Micron based video cards.
       The driver supports following framebuffer depths: 8, 15	(Verite	 V1000
       only),  16  and	24. Acceleration and multi-head configurations are not
       supported yet, but are work in progress.

SUPPORTED HARDWARE
       The rendition driver supports PCI and AGP video cards based on the fol‐
       lowing Rendition/Micron chips:

       V1000	   Verite V1000 based cards.

       V2100	   Verite  V2100  based	 cards. Diamond Stealth II S220 is the
		   only known such card.

       V2200	   Verite V2200 based cards.

CONFIGURATION DETAILS
       Please refer to xorg.conf(5) for general configuration  details.	  This
       section only covers configuration details specific to this driver.

       The  driver  auto-detects  the  chipset type, but the following ChipSet
       names may optionally be specified in the config file "Device"  section,
       and will override the auto-detection:

	   "v1000", "v2x00".

       The  driver will auto-detect the amount of video memory present for all
       chips. If the amount of memory  is  detected  incorrectly,  the	actual
       amount of video memory should be specified with a VideoRam entry in the
       config file "Device" section.

       The following driver Options are supported:

       Option "SWCursor" "boolean"
	      Disables use of the hardware cursor. Default: use HW-cursor.

       Option "OverclockMem" "boolean"
	      Increases	 the  Mem/Sys  clock  to  125MHz/60MHz	from  standard
	      110MHz/50MHz.  Default: Not overclocked.

       Option "DacSpeed" "MHz"
	      Run the memory at a higher clock. Useful on some cards with dis‐
	      play glitches at higher resolutions. But adds the risk to damage
	      the hardware. Use with caution.

       Option "FramebufferWC" "boolean"
	      If  writecombine is disabled in BIOS, and you add this option in
	      configuration file, then the driver will try to  request	write‐
	      combined	 access	 to  the  framebuffer.	This  can  drastically
	      increase the performance on unaccelerated server. Requires  that
	      "MTRR"-support  is  compiled  into the OS-kernel.	 Default: Dis‐
	      abled for V1000, enabled for V2100/V2200.

       Option "NoDDC" "boolean"
	      Disable probing  of  DDC-information  from  your	monitor.  This
	      information  is not used yet and is only there for informational
	      purposes.	 Safe to disable if  you  experience  problems	during
	      startup of X-server.  Default: Probe DDC.

       Option "ShadowFB" "boolean"
	      If  this	option is enabled, the driver will cause the CPU to do
	      each drawing operation first into a shadow frame buffer in  sys‐
	      tem  virtual  memory and then copy the result into video memory.
	      If this option is not active, the CPU will  draw	directly  into
	      video memory.  Enabling this option is beneficial for those sys‐
	      tems where reading from video memory is, on average, slower than
	      the  corresponding read/modify/write operation in system virtual
	      memory.  This is normally the case for PCI or AGP adapters, and,
	      so,  this	 option	 is  enabled by default unless acceleration is
	      enabled.	Default: Enabled unless acceleration is used.

       Option "Rotate" "CW"

       Option "Rotate" "CCW"
	      Rotate the display clockwise or counterclockwise.	 This mode  is
	      unaccelerated.  Default: no rotation.

       Notes  For  the moment the driver defaults to not request write-combine
	      for any chipset as there has been indications of	problems  with
	      it.  Use Option "MTRR" to let the driver request write-combining
	      of memory access on the video board.

SEE ALSO
       Xorg(1), xorg.conf(5), Xserver(1), X(7)

AUTHORS
       Authors include: Marc Langenbach, Dejan Ilic

X Version 11		  xf86-video-rendition 4.2.1		  RENDITION(4)
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