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X11R7.4 - man page for r128 (x11r4 section 4x)

R128(4x)										 R128(4x)

       r128 - ATI Rage 128 video driver

       Section "Device"
	 Identifier "devname"
	 Driver "r128"

       r128  is  an Xorg driver for ATI Rage 128 based video cards.  It contains full support for
       8, 15, 16 and 24 bit pixel depths, hardware acceleration of drawing  primitives,  hardware
       cursor,	video modes up to 1800x1440 @ 70Hz, doublescan modes (e.g., 320x200 and 320x240),
       gamma correction at all pixel depths, a fully programming dot clock and robust  text  mode
       restoration for VT switching.  Dualhead is supported on M3/M4 mobile chips.

       The  r128  driver  supports all ATI Rage 128 based video cards including the Rage Fury AGP
       32MB, the XPERT 128 AGP 16MB and the XPERT 99 AGP 8MB.

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

       The driver auto-detects all device information necessary to initialize the card.  However,
       if you have problems with auto-detection, you can specify:

	   VideoRam - in kilobytes
	   MemBase  - physical address of the linear framebuffer
	   IOBase   - physical address of the MMIO registers
	   ChipID   - PCI DEVICE ID

       In addition, the following driver Options are supported:

       Option "SWcursor" "boolean"
	      Selects software cursor.	The default is off.

       Option "NoAccel" "boolean"
	      Enables or disables all hardware acceleration.  The default is to  enable  hardware

       Option "Dac6Bit" "boolean"
	      Enables  or disables the use of 6 bits per color component when in 8 bpp mode (emu-
	      lates VGA mode).	By default, all 8 bits per color component are used.  The default
	      is off.

       Option "VideoKey" "integer"
	      This  overrides the default pixel value for the YUV video overlay key.  The default
	      value is undefined.

       Option "Display" "string"
	      Select display mode for devices which support flat panels. Supported modes are:

	      "FP" - use flat panel;

	      "CRT" - use cathode ray tube;

	      "Mirror" - use both FP and CRT;

	      "BIOS" - use mode as configured in the BIOS.

	      The default is FP.

       The following Options are mostly important for non-x86 architectures:

       Option "ProgramFPRegs" "boolean"
	      Enable or disable programming of the flat panel registers.  Beware  that	this  may
	      damage  your  panel,  so	use  this  at  your own risk.  The default depends on the

       Option "PanelWidth" "integer"

       Option "PanelHeight" "integer"
	      Override the flat panel dimensions in pixels. They are used  to  program	the  flat
	      panel  registers	and  normally  determined using the video card BIOS. If the wrong
	      dimensions are used, the system may hang.

       Option "UseFBDev" "boolean"
	      Enable or disable use of an OS-specific framebuffer device interface (which is  not
	      supported  on  all OSs).	See fbdevhw(4x) for further information.  Default: on for
	      PowerPC, off for other architectures.

       Option "DMAForXv" "boolean"
	      Try or don't try to use DMA for Xv image transfers. This will reduce CPU usage when
	      playing big videos like DVDs, but may cause instabilities.  Default: off.

       The following additional Options are supported:

       Option "ShowCache" "boolean"
	      Enable  or  disable  viewing  offscreen  cache memory.  A development debug option.
	      Default: off.

       Option "VGAAccess" "boolean"
	      Tell the driver if it can do legacy VGA IOs to the  card.  This  is  necessary  for
	      properly	resuming  consoles when in VGA text mode, but shouldn't be if the console
	      is using radeonfb or some other graphic mode driver. Some  platforms  like  PowerPC
	      have  issues with those, and they aren't necessary unless you have a real text mode
	      in console. The default is off on PowerPC and SPARC and on on other architectures.

       Dualhead Note: The video BIOS on some laptops interacts strangely with dualhead.  This can
       result  in flickering and problems changing modes on crtc2.  If you experience these prob-
       lems try toggling your laptop's video output switch (e.g., fn-f7, etc.) prior to  starting
       X or switch to another VT and back.

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

       Rickard E. (Rik) Faith	faith@precisioninsight.com
       Kevin E. Martin		kevin@precisioninsight.com

X Version 11			      xf86-video-r128 6.8.0				 R128(4x)

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