cyrix(4) - NetBSD Manual Pages

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CYRIX(4)		     XFree86			 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 Medi
       aGXm 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 accelera
       tion.

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

       Option "Rotate" "CW"





4.3.0			     Version				1





CYRIX(4)		     XFree86			 CYRIX(4)


       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 hard
       ware for some considerable time.

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

       The  5530A  video  overlay  facility is not currently sup
       ported.

       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.





























4.3.0			     Version				2