66 lines
2.3 KiB
Groff
66 lines
2.3 KiB
Groff
.\" $XFree86: xc/programs/Xserver/hw/xfree86/drivers/vga/vga.man,v 1.2 2001/01/27 18:20:56 dawes 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 VGA __drivermansuffix__ __vendorversion__
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.SH NAME
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vga \- Generic VGA 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 \*qvga\*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 vga
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is an __xservername__ driver for generic VGA video cards. It can drive most
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VGA-compatible video cards, but only makes use of the basic standard
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VGA core that is common to these cards. The driver supports depths 1, 4
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and 8. All relevant visual types are supported at each depth.
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Multi-head configurations
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are supported in combination with some other drivers, but only when the
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.B vga
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driver is driving the primary head.
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.SH SUPPORTED HARDWARE
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The
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.B vga
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driver supports most VGA-compatible video cards. There are some known
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exceptions, and those should be listed here.
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.SH CONFIGURATION DETAILS
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Please refer to __xconfigfile__(__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 presence of VGA-compatible hardware. The
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.B ChipSet
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name 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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"generic"
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.RE
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.PP
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The driver will only use 64k of video memory for depth 1 and depth 8 operation,
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and 256k of video memory for depth 4 (this is the standard VGA limit).
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.PP
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When operating at depth 8, only a single built-in 320x200 video mode is
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available. At other depths there is more flexibility regarding mode choice.
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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 \*qShadowFB\*q \*q" boolean \*q
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Enable or disable use of the shadow framebuffer layer. Default: off.
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This option is recommended for performance reasons when running at depths
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1 and 4, especially when using modern PCI-based hardware. It is required
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when using those depths in a multi-head configuration where one or more
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of the other screens is operating at a different depth.
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.SH "SEE ALSO"
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__xservername__(__appmansuffix__), __xconfigfile__(__filemansuffix__), xorgconfig(__appmansuffix__), Xserver(__appmansuffix__), X(__miscmansuffix__)
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.SH AUTHORS
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Authors include: Marc La France, David Dawes, and Dirk Hohndel.
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