RENDITION(4)                                                                                                        RENDITION(4)



NAME
       rendition - Rendition video driver

SYNOPSIS
       Section "Device"
         Identifier "devname"
         Driver "rendition"
         ...
       EndSection

DESCRIPTION
       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.

SUPPORTED HARDWARE
       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.

CONFIGURATION DETAILS
       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 incor-
       rectly, 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.

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

AUTHORS
       Authors include: Marc Langenbach, Dejan Ilic



X Version 11                                       xf86-video-rendition 4.2.4                                       RENDITION(4)