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chips - Chips and Technologies video driver
chips is an XFree86 driver for Chips and Technologies video
processors. The majority of the Chips and Technologies chipsets are supported
by this driver. In general the limitation on the capabilities of this driver
are determined by the chipset on which it is run. Where possible, this
driver provides full acceleration and supports the following depths: 1,
4, 8, 15, 16, 24 and on the latest chipsets an 8+16 overlay mode. All visual
types are supported for depth 1, 4 and 8 and both TrueColor and DirectColor
visuals are supported where possible. Multi-head configurations are supported
on PCI or AGP buses.
The chips driver supports video processors
on most of the bus types currently available. The chipsets supported fall
into one of three architectural classes. A basic architecture, the WinGine
architecture and the newer HiQV architecture.
chipsets are ct65520, ct65525, ct65530, ct65535, ct65540, ct65545, ct65546
Color depths 1, 4 and 8 are supported on all chipsets, while
depths 15, 16 and 24 are supported only on the 65540, 65545, 65546 and
65548 chipsets. The driver is accelerated when used with the 65545, 65546
or 65548 chipsets, however the DirectColor visual is not available.
The supported chipsets are ct64200 and ct64300
1, 4 and 8 are supported on both chipsets, while depths 15, 16 and 24 are
supported only on the 64300 chipsets. The driver is accelerated when used
with the 64300 chipsets, however the DirectColor visual is not available.
The supported chipsets are ct65550, ct65554, ct65555,
ct68554, ct69000 and ct69030
Color depths 1, 4, 8, 15, 16, 24 and 8+16
are supported on all chipsets. The DirectColor visual is supported on all
color depths except the 8+16 overlay mode. Full acceleration is supplied
for all chipsets.
Please refer to XF86Config(5)
general configuration details. This section only covers configuration details
specific to this driver.
The driver auto-detects the chipset type, but the
following ChipSet names may optionally be specified in the config file
"Device" section, and will override the auto-detection:
"ct65530", "ct65535", "ct65540", "ct65545", "ct65546", "ct65548", "ct65550",
"ct65554", "ct65555", "ct68554", "ct69000", "ct69030", "ct64200", "ct64300".
The driver will auto-detect the amount of video memory present for all chipsets.
But maybe overridden with the VideoRam entry in the config file "Device"
The following driver Options are supported, on one or more of the
- Option "NoAccel" "boolean"
- Disable or enable acceleration.
Default: acceleration is enabled.
- Option "NoLinear" "boolean"
linear addressing in cases where it is enabled by default. Default: off
- Option "Linear" "boolean"
- Enables linear addressing in cases where it isdisabled
by default. Default: off
- Option "HWCursor" "boolean"
- Enable or disable the
HW cursor. Default: on.
- Option "SWCursor" "boolean"
- Enable or disable the
HW cursor. Default: off.
- Option "STN" "boolean"
- Force detection of STN screen
type. Default: off.
- Option "UseModeline" "boolean"
- Reprogram flat panel timings
with values from the modeline. Default: off
- Option "FixPanelSize" "boolean"
- Reprogram flat panel size with values from the modeline. Default: off
- This option disables the stretching on a mode on
a flat panel to fill the screen. Default: off
- Option "LcdCenter" "boolean"
- Center the mode displayed on the flat panel on the screen. Default: off
- Option "HWclocks" "boolean"
- Force the use of fixed hardware clocks on chips
that support both fixed and programmable clocks. Default: off
- Option "UseVclk1"
- Use the Vclk1 programable clock on HiQV chipsets instead of Vclk2.
- Option "FPClock8" "float"
- Option "FPClock16" "float"
- Option "FPClock32" "float"
- Force the use of a particular
video clock speed for use with the flat panel at a specified depth
- Force the use of memory mapped IO where it can be used.
- Option "SuspendHack" "boolean"
- Force driver to leave centering
and stretching resgisters alone. This can fix some laptop suspend/resume
problems. Default: off
- Option "Overlay"
- Enable 8+24 overlay mode. Only appropriate
for depth 24. Default: off.
- Option "ColorKey" "integer"
- Set the colormap
index used for the transparency key for the depth 8 plane when operating
in 8+16 overlay mode. The value must be in the range 2-255. Default: 255.
- Option "ShadowFB" "boolean"
- Enable or disable use of the shadow framebuffer
layer. See shadowfb(4)
for further information. Default: off.
- Option "SyncOnGreen"
- Enable or disable combining the sync signals with the green signal.
- Option "ShowCache" "boolean"
- Enable or disable viewing offscreen
memory. Used for debugging only Default: off.
- Option "18bitBus" "boolean"
- Force the driver to assume that the flat panel has an 18bit data bus. Default:
You are also recommended to read the README.chips file that comes with all
XFree86 distributions, which discusses the chips driver in more detail.
Authors include: Jon Block, Mike Hollick, Regis Cridlig, Nozomi
Ytow, Egbert Eich, David Bateman and Xavier Ducoin
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