mga man page on BSDi

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MGA(4)							MGA(4)

NAME
       mga - Matrox video driver

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

DESCRIPTION
       mga  is	an  XFree86  driver  for Matrox video cards.  The
       driver is fully accelerated, and provides support for  the
       following  framebuffer  depths: 8, 15, 16, 24, and an 8+24
       overlay mode.  All visual types are supported for depth 8,
       and  both  TrueColor and DirectColor visuals are supported
       for the other depths except 8+24 mode which supports Pseu-
       doColor, GrayScale  and TrueColor.  Multi-head configura-
       tions are supported.

SUPPORTED HARDWARE
       The mga driver supports PCI and AGP video cards	based  on
       the following Matrox chips:

       MGA2064W Millennium (original)

       MGA1064SG   Mystique

       MGA2164W Millennium II

       G100

       G200	Millennium G200 and Mystique G200

       G400

CONFIGURATION DETAILS
       Please  refer  to  XF86Config(5) for general configuration
       details. This section only covers  configuration	 details
       specific to this driver.

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

	   "mga2064w", "mga1064sg", "mga2164w", "mga2164w  agp",
	   "mgag100", "mgag200", "mgag200 pci" "mgag400".

       The  driver  will  auto-detect  the amount of video memory
       present for all chips except the Millennium  II. In  the
       Millennium II case it defaults to 4096 kBytes.  When using
       a Millennium II, the actual amount of video memory  should
       be  specified  with  a  VideoRam entry in the config file

XFree86			Version 4.0.2				1

MGA(4)							MGA(4)

       "Device" section.

       The following driver Options are supported:

       Option "ColorKey" "integer"
	      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.

       Option "HWCursor" "boolean"
	      Enable or disable the HW cursor.	Default: on.

       Option "MGASDRAM" "boolean"
	      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 config-
	      urations so this option will often need to be spec-
	      ified in multihead configurations.  Default:  auto-
	      detected.

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

       Option "OverclockMem"
	      Set clocks to values used by  some  commercial  X-
	      Servers  (G100, G200 and G400 only).  Default: off.

       Option "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  fea-
	      ture) Default: off.

       Option "PciRetry" "boolean"
	      Enable or disable PCI retries.  Default: off.

       Option "Rotate" "CW"

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

       Option "ShadowFB" "boolean"
	      Enable  or  disable  use	of the shadow framebuffer
	      layer.  See shadowfb(4)  for  further  information.
	      Default: off.

       Option "SyncOnGreen" "boolean"
	      Enable  or  disable combining the sync signals with

XFree86			Version 4.0.2				2

MGA(4)							MGA(4)

	      the green signal. Default: off.

       Option "UseFBDev" "boolean"
	      Enable or disable use of on OS-specific  fb  inter-
	      face  (and is not supported on all OSs).	See fbde-
	      vhw(4) for further information.  Default: off.

       Option "VideoKey" "integer"
	      This sets the default pixel value for the YUV video
	      overlay key.  Default: undefined.

       Option "TexturedVideo" "boolean"
	      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.

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

AUTHORS
       Authors	include:  Radoslaw  Kapitan,  Mark Vojkovich, and
       also David Dawes, Guy Desbief, Dirk Hohndel, Doug Merritt,
       Andrew  E.  Mileski,  Andrew  van  der  Stock,  Leonard N.
       Zubkoff.

XFree86			Version 4.0.2				3

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