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CYRIX(4)                                                              CYRIX(4)




NAME

       cyrix - Cyrix video driver


SYNOPSIS

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


DESCRIPTION

       cyrix  is  an  XFree86 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
       horizonally.


CONFIGURATION DETAILS

       Please refer to XF86Config(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

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


AUTHORS

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



4.4.0                               XFree86                           CYRIX(4)