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cyrix - Cyrix video driver
cyrix is an XFree86 driver for the Cyrix MediaGX (now Natsemi Geode)
series of processors when using the built in video.
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
The MediaGX run length compresses its shared framebuffer, for the best
performance on a MediaGX machine pick backgrounds that compress well
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
Option "SWCursor" "boolean"
Disable or enable software cursor. Default: software cursor is
Option "HWCursor" "boolean"
Disable or enable hardware cursor. Default: hardware cursor is
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 unacceler-
ated. Default: no rotation.
This driver has not been tested on the original 5510 hardware for some
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
Hardware cursors are not currently supported.
XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7)
Authors include: Richard Hecker, Annius Groenink, Dirk Hohndel, The GGI
Project, Alan Cox.
4.5.0 XFree86 CYRIX(4)