MirOS Manual: cyrix(4)


CYRIX(4)            UNIX Programmer's Manual             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 Nat-
     semi Geode) series of processors when using the built in
     video.

SUPPORTED HARDWARE

     The cyrix driver supports the MediaGX, MediaGXi and MediaGXm
     processors, as well as the Natsemi 'Geode' branded proces-
     sors. It supports the CS5510, CS5520, CS5530 and CS5530A
     companion chips. The driver supports 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 back-
     grounds 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.

     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 normally only used when rotating the screen.
          The default is false.

     Option "Rotate" "CW"

XFree86                   Version 4.5.0                         1

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

     Option "Rotate" "CCW"
          Rotate the display clockwise or counterclockwise for
          use on Cyrix based tablet PC systems. This mode is
          currently unaccelerated. Default: no rotation.

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 exter-
     nal 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.

XFree86                   Version 4.5.0                         2

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