113 lines
4.1 KiB
Groff
113 lines
4.1 KiB
Groff
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.\" $XFree86: xc/programs/Xserver/hw/xfree86/drivers/rendition/rendition.man,v 1.3 2003/06/18 16:17:39 eich Exp $
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.\" shorthand for double quote that works everywhere.
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.ds q \N'34'
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.TH RENDITION __drivermansuffix__ __vendorversion__
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.SH NAME
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rendition \- Rendition video driver
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.SH SYNOPSIS
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.nf
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.B "Section \*qDevice\*q"
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.BI " Identifier \*q" devname \*q
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.B " Driver \*qrendition\*q"
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\ \ ...
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.B EndSection
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.fi
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.SH DESCRIPTION
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.B rendition
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is an XFree86 driver for Rendition/Micron based video cards. The driver
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supports following framebuffer depths: 8, 15 (Verite V1000 only), 16
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and 24. Acceleration and multi-head configurations are
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not supported yet, but are work in progress.
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.SH SUPPORTED HARDWARE
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The
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.B rendition
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driver supports PCI and AGP video cards based on the following Rendition/Micron chips:
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.TP 12
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.B V1000
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Verite V1000 based cards.
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.TP 12
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.B V2100
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Verite V2100 based cards. Diamond Stealth II S220 is the only known such card.
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.TP 12
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.B V2200
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Verite V2200 based cards.
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.SH CONFIGURATION DETAILS
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Please refer to XF86Config(__filemansuffix__) for general configuration
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details. This section only covers configuration details specific to this
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driver.
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.PP
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The driver auto-detects the chipset type, but the following
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.B ChipSet
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names may optionally be specified in the config file
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.B \*qDevice\*q
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section, and will override the auto-detection:
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.PP
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.RS 4
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"v1000", "v2x00".
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.RE
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.PP
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The driver will auto-detect the amount of video memory present for all
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chips. If the amount of memory is detected incorrectly, the actual amount
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of video memory should be specified with a
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.B VideoRam
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entry in the config file
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.B \*qDevice\*q
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section.
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.PP
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The following driver
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.B Options
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are supported:
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.TP
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.BI "Option \*qSWCursor\*q \*q" boolean \*q
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Disables use of the hardware cursor. Default: use HW-cursor.
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.TP
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.BI "Option \*qOverclockMem\*q \*q" boolean \*q
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Increases the Mem/Sys clock to 125MHz/60MHz from standard 110MHz/50MHz.
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Default: Not overclocked.
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.TP
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.BI "Option \*qDacSpeed\*q \*q" MHz \*q
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Run the memory at a higher clock. Useful on some cards with display glitches
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at higher resolutions. But adds the risk to damage the hardware. Use with
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caution.
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.TP
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.BI "Option \*qFramebufferWC\*q \*q" boolean \*q
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If writecombine is disabled in BIOS, and you add this option in configuration
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file, then the driver will try to request writecombined access to the
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framebuffer. This can drastically increase the performance on unaccelerated
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server. Requires that "MTRR"-support is compiled into the OS-kernel.
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Default: Disabled for V1000, enabled for V2100/V2200.
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.TP
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.BI "Option \*qNoDDC\*q \*q" boolean \*q
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Disable probing of DDC-information from your monitor. This information is not
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used yet and is only there for informational purposes. This might change
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before final XFree86 4.0 release. Safe to disable if you experience problems
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during startup of X-server.
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Default: Probe DDC.
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.TP
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.BI "Option \*qShadowFB\*q \*q" boolean \*q
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If this option is enabled, the driver will cause the CPU to do each drawing
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operation first into a shadow frame buffer in system virtual memory and then
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copy the result into video memory. If this option is not active, the CPU will
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draw directly into video memory. Enabling this option is beneficial for those
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systems where reading from video memory is, on average, slower than the
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corresponding read/modify/write operation in system virtual memory. This is
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normally the case for PCI or AGP adapters, and, so, this option is enabled by
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default unless acceleration is enabled.
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Default: Enabled unless acceleration is used.
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.TP
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.BI "Option \*qRotate\*q \*qCW\*q"
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.TP
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.BI "Option \*qRotate\*q \*qCCW\*q"
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Rotate the display clockwise or counterclockwise. This mode is unaccelerated.
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Default: no rotation.
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.TP
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.SH "Notes"
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For the moment the driver defaults to not request write-combine for any chipset
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as there has been indications of problems with it. Use
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.B "Option \*qMTRR\*q"
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to let the driver request write-combining of memory access on the video board.
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.SH "SEE ALSO"
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XFree86(1), XF86Config(__filemansuffix__), xf86config(1), Xserver(1), X(__miscmansuffix__)
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.SH AUTHORS
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Authors include: Marc Langenbach, Dejan Ilic
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