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R128(4x)										 R128(4x)

       r128 - ATI Rage 128 video driver

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

       r128  is  an  XFree86 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,  hard-
       ware  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.

       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 XF86Config(5x) for general configuration details.  This section only  cov-
       ers 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: off.

       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.

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

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

XFree86 			      Version Version 4.3.0				 R128(4x)
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