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 processors, as well as
the Natsemi 'Geode' branded processors. 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 backgrounds that compress well
horizontally.
CONFIGURATION DETAILS
Please refer to xorg.conf(5x) for general configuration
details. This section only covers configuration details specific to this
driver.
The following driver
options
are supported
Option N'34'NoAccelN'34' N'34'booleanN'34'
Disable or enable acceleration. Default: acceleration is enabled.
Option N'34'SWCursorN'34' N'34'booleanN'34'
Disable or enable software cursor. Default software cursor is enabled and a
hardware cursor is used.
Option N'34'HWCursorN'34' N'34'booleanN'34'
Disable or enable hardware cursor. Default hardware cursor is disabled.
Option N'34'ShadowFBN'34' N'34'booleanN'34'
Disable or enable shadow frame buffer. The shadow buffer is normally only
used when rotating the screen. The default is false.
Option N'34'RotateN'34' N'34'CWN'34'
Option N'34'RotateN'34' N'34'CCWN'34'
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.
Xorg uses the MediaGX 'SoftVGA' interface. On a small number of boards
this is buggy and may result in strange illegal instruction traps.
