MirOS Manual: chips(4)


CHIPS(4)            UNIX Programmer's Manual             CHIPS(4)

NAME

     chips - Chips and Technologies video driver

SYNOPSIS

     Section "Device"
       Identifier "devname"
       Driver "chips"
       ...
     EndSection

DESCRIPTION

     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 limi-
     tation 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 sup-
     ported on PCI or AGP buses.

SUPPORTED HARDWARE

     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 architec-
     ture, the WinGine architecture and the newer HiQV architec-
     ture.

     Basic Architecture

     The supported chipsets are ct65520, ct65525, ct65530,
     ct65535, ct65540, ct65545, and ct65548

     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.

     Wingine Architecture

     The supported chipsets are ct64200 and ct64300

     Color depths 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.

     HiQV Architecture

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     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.

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 following
     ChipSet names may optionally be specified in the config file
     "Device" section, and will override the auto-detection:

         "ct65520", "ct65525", "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" section.

     The following driver Options are supported, on one or more
     of the supported chipsets:

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

     Option "NoLinear" "boolean"
          Disables linear addressing in cases where it is enabled
          by default. Default: off.

     Option "Linear" "boolean"
          Enables linear addressing in cases where it is disabled
          by default. Default: off.

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

     Option "SWCursor" "boolean"
          Enable or disable the SW 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

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CHIPS(4)            UNIX Programmer's Manual             CHIPS(4)

          modeline. Default: off.

     Option "FixPanelSize" "boolean"
          Reprogram flat panel size with values from the mode-
          line. Default: off.

     Option "NoStretch" "boolean"
          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" "boolean"
          Use the Vclk1 programmable clock on HiQV chipsets
          instead of Vclk2. Default: off.

     Option "FPClock8" "float"

     Option "FPClock16" "float"

     Option "FPClock24" "float"

     Option "FPClock32" "float"
          Force the use of a particular video clock speed for use
          with the flat panel at a specified depth.

     Option "MMIO" "boolean"
          Force the use of memory mapped IO for acceleration
          registers. Default: off.

     Option "FullMMIO" "boolean"
          Force the use of memory mapped IO where it can be used.
          Default: off.

     Option "SuspendHack" "boolean"
          Force driver to leave centering and stretching regis-
          ters 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

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          for the depth 8 plane when operating in 8+16 overlay
          mode.  The value must be in the range 2-255.  Default:
          255.

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

     Option "ShadowFB" "boolean"
          Enable or disable use of the shadow framebuffer layer.
          Default: off.

     Option "SyncOnGreen" "boolean"
          Enable or disable combining the sync signals with the
          green signal. Default: off.

     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: off.

     Option "Crt2Memory" "integer"
          In a dual-head mode (69030 only) this option selects
          the amount of memory to set aside for the second head.
          If not specified, half the memory is used. Default:
          off.

     Option "DualRefresh" "integer"
          The 69030 supports independent refresh rates on its two
          display channels. This mode of operations uses addi-
          tional memory bandwidth and thus limits the maximum
          colour depth and refresh rate that can be achieved, and
          so is off by default.  Using this option forces the use
          of an independent refresh rate on the two screens.
          Default: off.

SEE ALSO

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

     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

     Authors include: Jon Block, Mike Hollick, Regis Cridlig,
     Nozomi Ytow, Egbert Eich, David Bateman and Xavier Ducoin

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