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CYRIX(4)                   Kernel Interfaces Manual                   CYRIX(4)



NAME
       cyrix - Cyrix video driver

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

DESCRIPTION
       cyrix  is  an  Xorg  driver  for  the Cyrix MediaGX (now Natsemi Geode)
       series of processors when using the built in video.

SUPPORTED HARDWARE
       The cyrix driver supports the MediaGX, MediaGXi  and  MediaGXm  proces-
       sors,  as  well  as the Natsemi 'Geode' branded processors. It supports
       the CS5510, CS5520, CS5530 and CS5530A companion chips. The driver sup-
       ports  4,  8,  15  and  16 bit deep displays with video compression and
       acceleration.

       The MediaGX run length compresses its shared framebuffer, for the  best
       performance  on  a  MediaGX machine pick backgrounds that compress well
       horizontally.

CONFIGURATION DETAILS
       Please refer to xorg.conf(5) for general configuration  details.   This
       section only covers configuration details specific to this driver.

       The following driver options are supported

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

       Option "SWCursor" "boolean"
              Disable or enable software cursor. Default  software  cursor  is
              enabled and a hardware cursor is used.

       Option "HWCursor" "boolean"
              Disable  or  enable  hardware cursor. Default hardware cursor is
              disabled.

       Option "ShadowFB" "boolean"
              Disable or enable shadow frame buffer. The shadow buffer is nor-
              mally only used when rotating the screen. The default is false.

       Option "Rotate" "CW"

       Option "Rotate" "CCW"

       Rotate the display clockwise or counterclockwise for use on Cyrix based
       tablet PC systems. This mode is currently unaccelerated.

BUGS
       This driver has not been tested on the original 5510 hardware for  some
       considerable time.

       8bit mode does not currently work on the CS5510 with external RAMDAC.

       The 5530A video overlay facility is not currently supported.

       XFree86  uses  the  MediaGX  'SoftVGA'  interface. On a small number of
       boards this is buggy and may  result  in  strange  illegal  instruction
       traps.

       Hardware cursors are not currently supported.

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

AUTHORS
       Authors include: Richard Hecker, Annius Groenink, Dirk Hohndel, The GGI
       Project, Alan Cox.



X Version 11                xf86-video-cyrix 1.1.0                    CYRIX(4)