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+.\" $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga.man,v 1.6 2003/01/26 02:17:28 dawes Exp $ 
+.\" shorthand for double quote that works everywhere.
+.ds q \N'34'
+.TH MGA __drivermansuffix__ __vendorversion__
+.SH NAME
+mga \- Matrox video driver
+.SH SYNOPSIS
+.nf
+.B "Section \*qDevice\*q"
+.BI "  Identifier \*q"  devname \*q
+.B  "  Driver \*qmga\*q"
+\ \ ...
+.B EndSection
+.fi
+.SH DESCRIPTION
+.B 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
+PseudoColor, GrayScale and TrueColor.  Multi-card configurations
+are supported.  XVideo is supported on G200 and newer systems, with
+either
+.B TexturedVideo
+or video overlay.  The second head of dual-head cards is supported for
+the G450 and G550.  Support for the second head on G400 cards requires
+a binary-only "mga_hal" module that is available from Matrox
+<http://www.matrox.com>, and may be on the CD supplied with the card. 
+That module also provides various other enhancements,
+and may be necessary to use the DVI (digital) output on the G550
+(and other cards).
+.SH SUPPORTED HARDWARE
+The
+.B mga
+driver supports PCI and AGP video cards based on the following Matrox chips:
+.TP 12
+.B MGA2064W
+Millennium (original)
+.TP 12
+.B MGA1064SG
+Mystique
+.TP 12
+.B MGA2164W
+Millennium II
+.TP 12
+.B G100
+.TP 12
+.B G200
+Millennium G200 and Mystique G200
+.TP 12
+.B G400
+.TP 12
+.B G450
+.TP 12
+.B G550
+.SH CONFIGURATION DETAILS
+Please refer to XF86Config(__filemansuffix__) for general configuration
+details.  This section only covers configuration details specific to this
+driver.
+.PP
+The driver auto-detects the chipset type, but the following
+.B ChipSet
+names may optionally be specified in the config file
+.B \*qDevice\*q
+section, and will override the auto-detection:
+.PP
+.RS 4
+"mga2064w", "mga1064sg", "mga2164w", "mga2164w agp", "mgag100", "mgag200",
+"mgag200 pci", "mgag400", "mgag550".
+.RE
+.PP
+The G450 is Chipset "mgag400" with ChipRev 0x80.
+.PP
+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
+.B VideoRam
+entry in the config file
+.B \*qDevice\*q
+section.
+.PP
+The following driver
+.B Options
+are supported:
+.TP
+.BI "Option \*qColorKey\*q \*q" integer \*q
+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.
+.TP
+.BI "Option \*qHWCursor\*q \*q" boolean \*q
+Enable or disable the HW cursor.  Default: on.
+.TP
+.BI "Option \*qMGASDRAM\*q \*q" boolean \*q
+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.
+.TP
+.BI "Option \*qNoAccel\*q \*q" boolean \*q
+Disable or enable acceleration.  Default: acceleration is enabled.
+.TP
+.BI "Option \*qNoHal\*q \*q" boolean \*q
+Disable or enable loading the "mga_hal" module.  Default: the module is
+loaded when available and when using hardware that it supports.
+.TP
+.BI "Option \*qOverclockMem\*q"
+Set clocks to values used by some commercial X-Servers (G100, G200 and G400
+only).  Default: off.
+.TP
+.BI "Option \*qOverlay\*q"
+Enable 8+24 overlay mode.  Only appropriate for depth 24.
+.RB ( Note: 
+the G100 is unaccelerated in the 8+24 overlay mode due to a missing 
+hardware feature.) Default: off.
+.TP
+.BI "Option \*qPciRetry\*q \*q" boolean \*q
+Enable or disable PCI retries.  Default: off.
+.TP
+.BI "Option \*qRotate\*q \*qCW\*q"
+.TP
+.BI "Option \*qRotate\*q \*qCCW\*q"
+Rotate the display clockwise or counterclockwise.  This mode is unaccelerated.
+Default: no rotation.
+.TP
+.BI "Option \*qShadowFB\*q \*q" boolean \*q
+Enable or disable use of the shadow framebuffer layer.  Default: off.
+.TP
+.BI "Option \*qSyncOnGreen\*q \*q" boolean \*q
+Enable or disable combining the sync signals with the green signal.
+Default: off.
+.TP
+.BI "Option \*qUseFBDev\*q \*q" boolean \*q
+Enable or disable use of on OS-specific fb interface (and is not supported
+on all OSs).  See fbdevhw(__drivermansuffix__) for further information.
+Default: off.
+.TP
+.BI "Option \*qVideoKey\*q \*q" integer \*q
+This sets the default pixel value for the YUV video overlay key.
+Default: undefined.
+.TP
+.BI "Option \*qTexturedVideo\*q \*q" boolean \*q
+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.
+.SH "SEE ALSO"
+XFree86(1), XF86Config(__filemansuffix__), xf86config(1), Xserver(1), X(__miscmansuffix__)
+.SH 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, Andrew C. Aitchison.