RENDITION(4)                Kernel Interfaces Manual                RENDITION(4)

       rendition - Rendition video driver

       Section "Device"
         Identifier "devname"
         Driver "rendition"

       rendition is an Xorg driver for Rendition/Micron based video cards.  The
       driver supports following framebuffer depths: 8, 15 (Verite V1000 only),
       16 and 24. Acceleration and multi-head configurations are not supported
       yet, but are work in progress.

       The rendition driver supports PCI and AGP video cards based on the
       following Rendition/Micron chips:

       V1000       Verite V1000 based cards.

       V2100       Verite V2100 based cards. Diamond Stealth II S220 is the only
                   known such card.

       V2200       Verite V2200 based cards.

       Please refer to xorg.conf(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:

           "v1000", "v2x00".

       The driver will auto-detect the amount of video memory present for all
       chips. If the amount of memory is detected incorrectly, the actual amount
       of video memory should be specified with a VideoRam entry in the config
       file "Device" section.

       The following driver Options are supported:

       Option "SWCursor" "boolean"
              Disables use of the hardware cursor. Default: use HW-cursor.

       Option "OverclockMem" "boolean"
              Increases the Mem/Sys clock to 125MHz/60MHz from standard
              110MHz/50MHz.  Default: Not overclocked.

       Option "DacSpeed" "MHz"
              Run the memory at a higher clock. Useful on some cards with
              display glitches at higher resolutions. But adds the risk to
              damage the hardware. Use with caution.

       Option "FramebufferWC" "boolean"
              If writecombine is disabled in BIOS, and you add this option in
              configuration file, then the driver will try to request
              writecombined access to the framebuffer. This can drastically
              increase the performance on unaccelerated server. Requires that
              "MTRR"-support is compiled into the OS-kernel.  Default: Disabled
              for V1000, enabled for V2100/V2200.

       Option "NoDDC" "boolean"
              Disable probing of DDC-information from your monitor. This
              information is not used yet and is only there for informational
              purposes.  Safe to disable if you experience problems during
              startup of X-server.  Default: Probe DDC.

       Option "ShadowFB" "boolean"
              If this option is enabled, the driver will cause the CPU to do
              each drawing operation first into a shadow frame buffer in system
              virtual memory and then copy the result into video memory. If this
              option is not active, the CPU will draw directly into video
              memory.  Enabling this option is beneficial for those systems
              where reading from video memory is, on average, slower than the
              corresponding read/modify/write operation in system virtual
              memory.  This is normally the case for PCI or AGP adapters, and,
              so, this option is enabled by default unless acceleration is
              enabled.  Default: Enabled unless acceleration is used.

       Option "Rotate" "CW"

       Option "Rotate" "CCW"
              Rotate the display clockwise or counterclockwise.  This mode is
              unaccelerated.  Default: no rotation.

       Notes  For the moment the driver defaults to not request write-combine
              for any chipset as there has been indications of problems with it.
              Use Option "MTRR" to let the driver request write-combining of
              memory access on the video board.

       Xorg(1), xorg.conf(5), Xserver(1), X(7)

       Authors include: Marc Langenbach, Dejan Ilic

X Version 11               xf86-video-rendition 4.2.6               RENDITION(4)