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-!!
-!! Copyright (c) 2001 by The XFree86 Project, Inc.
-!!
-!! Permission is hereby granted, free of charge, to any person obtaining a
-!! copy of this software and associated documentation files (the "Software"),
-!! to deal in the Software without restriction, including without limitation
-!! the rights to use, copy, modify, merge, publish, distribute, sublicense,
-!! and/or sell copies of the Software, and to permit persons to whom the
-!! Software is furnished to do so, subject to the following conditions:
-!!
-!! The above copyright notice and this permission notice shall be included in
-!! all copies or substantial portions of the Software.
-!!
-!! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-!! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-!! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-!! THE XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-!! WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
-!! OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-!! SOFTWARE.
-!!
-!! Except as contained in this notice, the name of the XFree86 Project shall
-!! not be used in advertising or otherwise to promote the sale, use or other
-!! dealings in this Software without prior written authorization from the
-!! XFree86 Project.
-!!
-!! $XFree86: xc/programs/Xserver/hw/xfree86/Options,v 1.10 2003/02/15 06:46:30 paulo Exp $
-
-!! XAA options
-xaa.XaaNoCPUToScreenColorExpandFill:\
-Disables accelerated rectangular expansion blits from source patterns \
-stored in system memory (using a memory-mapped aperture).
-
-xaa.XaaNoColor8x8PatternFillRect:\
-Disables accelerated fills of a rectangular region with a full-color pattern.
-
-xaa.XaaNoColor8x8PatternFillTrap:\
-Disables accelerated fills of a trapezoidal region with a full-color pattern.
-
-xaa.XaaNoDashedBresenhamLine:\
-Disables accelerated dashed Bresenham line draws.
-
-xaa.XaaNoDashedTwoPointLine:\
-Disables accelerated dashed line draws between two arbitrary points.
-
-xaa.XaaNoImageWriteRect:\
-Disables acclerated transfers of full-color rectangular patterns from \
-system memory to video memory (using a memory-mapped aperture).
-
-xaa.XaaNoMono8x8PatternFillRect:\
-Disables accelerated fills of a rectangular region with a monochrome pattern.
-
-xaa.XaaNoMono8x8PatternFillTrap:\
-Disables accelerated fills of a trapezoidal region with a monochrome pattern.
-
-xaa.XaaNoOffscreenPixmaps:\
-Disables accelerated draws into pixmaps stored in offscreen video memory.
-
-xaa.XaaNoPixmapCache:\
-Disables caching of patterns in offscreen video memory.
-
-xaa.XaaNoScanlineCPUToScreenColorExpandFill:\
-Disables accelerated rectangular expansion blits from source patterns \
-stored in system memory (one scan line at a time).
-
-xaa.XaaNoScanlineImageWriteRect:\
-Disables accelerated transfers of full-color rectangular patterns from \
-system memory to video memory (one scan line at a time).
-
-xaa.XaaNoScreenToScreenColorExpandFill:\
-Disables accelerated rectangular expansion blits from source patterns \
-stored in off-screen video memory.
-
-xaa.XaaNoScreenToScreenCopy:\
-Disables accelerated copies of rectangular regions from one part of video \
-memory to another part of video memory.
-
-xaa.XaaNoSolidBresenhamLine:\
-Disables accelerated solid Bresenham line draws.
-
-xaa.XaaNoSolidFillRect:\
-Disables accelerated solid-color fills of rectangles.
-
-xaa.XaaNoSolidFillTrap:\
-Disables accelerated solid-color fills of Bresenham trapezoids.
-
-xaa.XaaNoSolidHorVertLine:\
-Disables accelerated solid horizontal and vertical line draws.
-
-xaa.XaaNoSolidTwoPointLine:\
-Disables accelerated solid line draws between two arbitrary points.
-
-
-!! DDC Options
-ddc.NoDDC:\
-Disables DDC (Display Data Channel) so that the Xserver doesn't try to talk to\
-the Monitor. \
-Default: off, implies DDC is used.
-
-ddc.NoDDC1:\
-Disables use of DDC version 1 (DDC using vertical refresh). \
-Default: off, implies DDC1 is used.
-
-ddc.NoDDC2:\
-Disables use of DDC version 2 (DDC using I2C - usually over vga connector). \
-Default: off, implies DDC2 is used.
-
-
-!! FBDev options
-fbdev.fbdev:\
-The framebuffer device to use. \
-Default: /dev/fb0.
-
-fbdev.ShadowFB:\
-Enable or disable use of the shadow framebuffer layer. \
-Default: on.
-
-fbdev.Rotate:\
-Enable rotation of the display. The supported values are "CW" (clockwise, \
-90 degrees), "UD" (upside down, 180 degrees) and "CCW" (counter clockwise, \
-270 degrees). Implies use of the shadow framebuffer layer. \
-Default: off.
-
-
-!! MGA options
-mga.ColorKey:\
-Set the colormap index used for the transparency key for the depth 8 plane \
-when operating in 8+24 overlay mode. The value must be in the range 2-255. \
-Default: 255.
-
-!mga.HWcursor:\
-!Enable or disable the HW cursor. Default: on.
-
-mga.MGASDRAM:\
-Specify whether G100, G200 or G400 cards have SDRAM. The driver attempts to \
-auto-detect this based on the card's PCI subsystem ID. This option may be \
-used to override that auto-detection. The mga driver is not able to \
-auto-detect the presence of of SDRAM on secondary heads in multihead \
-configurations so this option will often need to be specified in multihead \
-configurations. Default: auto-detected.
-
-mga.NoAccel:\
-Disable or enable 2D hardware acceleration. Default: acceleration is enabled.
-
-mga.OverclockMem:\
-Set clocks to values used by some commercial X-Servers (G100, G200 and \
-G400 only). Default: off.
-
-mga.Overlay:\
-Enable 8+24 overlay mode. Only appropriate for depth 24. (Note: the G100 is \
-unaccelerated in the 8+24 overlay mode due to a missing hardware feature). \
-Default: off.
-
-mga.PciRetry:\
-Enable or disable PCI retries. Default: off.
-
-mga.Rotate:\
-Rotate the display clockwise or counterclockwise. This mode is unaccelerated. \
-Default: no rotation.
-
-mga.ShadowFB:\
-Enable or disable use of the shadow framebuffer layer. Default: off. \
-
-mga.SyncOnGreen:\
-Enable or disable combining the sync signals with the green signal. \
-Default: off.
-
-mga.UseFBDev:\
-Enable or disable use of on OS-specific fb interface (and is not supported \
-on all OSs). See fbdevhw(4) for further information. Default: off.
-
-mga.VideoKey:\
-This sets the default pixel value for the YUV video overlay key. \
-Default: undefined.
-
-mga.TexturedVideo:\
-This has XvImage support use the texture engine rather than the video \
-overlay. This option is only supported by the G200 and G400, and only in \
-16 and 32 bits per pixel. Default: off.
-
-mga.NoHal:\
-Matrox provides a "Hardware Abstraction Layer", \
-a separate binary which enables extra hardware features from G400 onwards. \
-Default: HAL is used.
-
-!mga.DigitalScreen:\
-! Option Ignored. Drivers auto-detect Digital output if they support it at all.
-!Default: Auto-detected.
-
-! mga.TV:\
-! Option Ignored. Drivers auto-detect TV if they support TV out at all.
-!Default: Auto-detected.
-
-mga.TVStandard:\
-(HAL only) Picture standard for TV out. Use "PAL" for 50Hz PAL. \
-Default: 60Hz NTSC.
-
-mga.CableType:\
-(HAL only) Set the cable type for TV out. Options are "SCART_RGB", \
-"SCART_COMPOSITE", or "SCART_TYPE2". Any other string enables the default. \
-Default: YC_COMPOSITE.
-
-mga.SwappedHead:\
-(HAL only) For Dual Head cards, reverse relationship between CRTC picture \
-generators and video output sockets. \
-Especially useful with TV or digital outputs. \
-Default: CRTC1 generates output for socket 1 and CRTC2 generates output for socket 2.
-
-mga.Crtc2Half:\
-In dual head mode, allow CRTC2 to use half of the video memory. \
-Default: CRTC2 uses min{8MB, half video RAM}, but see also Crtc2Ram.
-
-mga.Crtc2Ram:\
-In dual head mode, CRTC2 will use this many KB of video memory. \
-Overrrides Crtc2Half. \
-Default: CRTC2 uses min{8MB, half video RAM}, but see also Crtc2Half.
-
-mga.ShowCache:\
-An option for hackers. The pixmap cache lives in off-screen video memory. \
-This option extends the virtual desktop to show this part of video memory. \
-Default: Off.
-
-mga.AGPMode:\
-AGP bus speed multiplier, used by DRI. \
-Default: x1 (slowest but most stable).
-
-
-!! R128 options
-
-!r128.SWcursor: \
-!Selects software cursor. \
-!Default: off.
-
-r128.NoAccel:\
-Enables or disables all hardware acceleration. \
-Default: on.
-
-r128.Dac6Bit:\
-Enables or disables the use of 6 bits per color component when in 8 bpp \
-mode (emulates VGA mode). \
-Default: off.
-
-r128.VideoKey:\
-This overrides the default pixel value for the YUV video overlay key. \
-Default: undefined.
-
-r128.Display:\
-Select display mode for devices which support flat panels. Supported\
-modes are "FP", "CRT", "Mirror", "BIOS". \
-Default: "FP".
-
-r128.ProgramFPRegs:\
-Enable or disable programming of the flat panel registers.\
-Beware that this may damage your panel, so use at your own risk. \
-Default: device dependant.
-
-r128.PanelWidth:\
-Override flat panel width in pixels. \
-Default: determined using BIOS.
-
-r128.PanelHeight:\
-Override flat panel height in pixels. \
-Default: determined using BIOS.
-
-r128.UseFBDev:\
-Enable or disable use of on OS-specific fb interface (and is not supported \
-on all OSs). See fbdevhw(4) for further information. Default: off.
-
-r128.DMAForXv:\
-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.
-
-
-!! Radeon options
-
-radeon.SWcursor:\
-Selects software cursor. Default: off.
-
-radeon.NoAccel:\
-Disables all hardware acceleration. Default: off.
-
-radeon.Dac6Bit:\
-Enables or disables the use of 6 bits per color component when in 8 bpp \
-mode (emulates VGA mode). Default: off.
-
-radeon.VideoKey:\
-This overrides the default pixel value for the YUV video overlay key. \
-Default: undefined.
-
-radeon.UseFBDev:\
-Enable or disable use of an OS-specific framebuffer device interface \
-(which is not supported on all OSs). Default: off.
-
-radeon.AGPMode:\
-Set AGP data transfer rate. (used only when DRI is enabled) \
-Valid choices: 1 (default), 2 and 4
-
-radeon.AGPFastWrite:\
-Enable AGP fast write. (used only when DRI is enabled) \
-Default: off.
-
-radeon.ForcePCIMode:\
-Force to use PCI GART for DRI acceleration. (used only when DRI is enabled) \
-Default: off.
-
-radeon.DDCMode:\
-Force to use the modes queried from the connected monitor. Default: off.
-
-radeon.CloneDisplay:\
-This option is only used for dual-head cards with only single screen section \
-specified in the configuration file. Valid choices: \
-0 - disable (one CRTC used for both heads) \
-1 - auto-detect (default) \
-2 - force on \
-3 - auto-detect + 2nd head overlay \
-4 - force on + 2nd head overlay \
-
-radeon.CloneMode:\
-Set the first mode for the secondary head. It can be different from the modes \
-used for the primary head. If you don't have this line while clone is on, the \
-modes specified for the primary head will be used for the secondary head.
-
-radeon.CloneHSync:\
-Set the horizontal sync range for the secondary monitor. It is not required if \
-a DDC capable monitor is connected. Default: undefined.
-
-radeon.CloneVRefresh:\
-Set the vertical refresh range for the secondary monitor. It is not required \
-if a DDC capable monitor is connected. Default: undefined.
-
-radeon.PanelOff:\
-Disable panel output. Only used when clone is enabled. Default: off.
-
-radeon.EnablePageFlip:\
-Enable page flipping for 3D acceleration. This will increase performance but \
-not work correctly in some rare cases. Default: off.
-
-
-!! NeoMagic options
-
-neo.StrangeLockups:\
-Before XFree86 version 4.2.0 many NeoMagic systems experienced \
-strange lockups unless they used the options \
-"XaaNoScanlineImageWriteRect" and "XaaNoScanlineCPUToScreenColorExpandFill". \
-Setting this to "No" is faster but will lock some machines. \
-Default: Yes.
-
-!! Vesa options
-vesa.ShadowFB:\
-Enable or disable use of the shadow framebuffer layer. See shadowfb(4)\
-for further information. Default: on.
-
-
-!! SiS Options
-sis.NoAccel:\
-Disable or enable acceleration. \
-Default: acceleration is enabled.
-
-!sis.HWcursor:\
-!Enable or disable the HW cursor. \
-!Default: on.
-
-!sis.SWcursor:\
-!The opposite of HWCursor. \
-!Default: on.
-
-sis.NoXVideo:\
-Disable XV (XVideo) extension support. \
-Default: off.
-
-sis.SetMClk:\
-Set the memory clock in MHz. \
-Default: autodetect.
-
-sis.PciRetry:\
-Enable or disable PCI retries. \
-Default: on.
-
-sis.TurboQueue:\
-Enable or disable TurboQueue mode. \
-Default: off for SIS530, on for the others.
-
-sis.FastVram:\
-Enable or disable FastVram mode. \
-Default: on.
-
-sis.Rotate:\
-Rotate the display clockwise (CW) or counterclockwise (CCW). \
-This mode is unaccelerated, and uses the Shadow Frame Buffer layer \
-Default: no rotation.
-
-sis.ForceCRT2Type:\
-Force display type to one of: TV, LCD or VGA. \
-Default: autodetect.
-
-sis.ShadowFB:\
-Enable or disable use of the shadow framebuffer layer. See shadowfb(4) for \
-further information. Default: off.
-
-!! Generic driver options, apply to many drivers
-
-*.SWcursor:\
-See also HWcursor.\
-Default: Usually Off.
-
-*.HWcursor:\
-Use the hardware cursor. See also SWcursor. \
-Default: usually HWcursor, but some drivers may default to software.