nsc(4) - NetBSD Manual Pages

NSC(4)			     XFree86			   NSC(4)



NAME

       nsc - Nsc video driver


SYNOPSIS

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


DESCRIPTION

       nsc is an XFree86 driver for National Semiconductors GEODE
       processor family.  It uses the  DURANGO	kit  provided  by
       National	 Semiconductor.	  The  driver is accelerated, and
       provides support for the following framebuffer depths:  8,
       16 and 24.


SUPPORTED HARDWARE

       The  nsc	 driver	 supports  GXLV	 (5530	companion  chip),
       SC1200, SC1400 and GX2 (5535 companion chip).


CONFIGURATION DETAILS

       Please refer to XF86Config(5)  for  general  configuration
       details.	  This	section only covers configuration details
       specific to this driver.

       The driver will auto-detect the	amount	of  video  memory
       present for all chips. If the amount of memory is detected
       incorrectly, the actual amount of video memory  should  be
       specified  with	a  VideoRam  entry  in	the  config  file
       "Device" section.

       The following driver Options are supported:

       Option "SWCursor" "boolean"
	      Enable or disable the SW cursor.	Default: off.

       Option "HWCursor" "boolean"
	      Enable or disable the HW cursor.	Default: on.

       Option "NoAccel" "boolean"
	      Disable or enable acceleration.  Default: accelera
	      tion is enabled.

       Option "NoCompression" "boolean"
	      Disable  or  enable compression.	Default: compres
	      sion is enabled.

       Option "ShadowFB" "boolean"
	      Enable or disable use  of	 the  shadow  framebuffer
	      layer.  Default: off.

       Option "Rotate" "CW"
	      Rotate   the   display   clockwise.  This	 mode  is



4.3.0			     Version				1





NSC(4)			     XFree86			   NSC(4)


	      unaccelerated, and uses  the  Shadow  Frame  Buffer
	      layer.  Default: no rotation.

       Option "Rotate" "CCW"
	      Rotate  the  display counterclockwise. This mode is
	      unaccelerated, and uses  the  Shadow  Frame  Buffer
	      layer.  Default: no rotation.

       Option "FlatPanel" "boolean"
	      This  enables the FlatPanel display unit. The Flat
	      Panel depends on the BIOS to do the Pnale h/w  ini
	      tialization.   In GX2 based platforms with TFT part
	      Flatpanel is enabled, and on CRT part is	disabled.
	      Default: off.

       Option "OSMImageBuffers" "integer"
	      This  sets  the  number  of  scanline buffers to be
	      allocated in  offscreen  memory  for  acceleration.
	      This  can take any value 0 will disable the alloca
	      tion. Disabled if cannot alocate requested scanline
	      memory.  Default: 20.

       Option "ColorKey" "integer"
	      This sets the default pixel value for the YUV video
	      overlay key.  Default: 0.

       The following Options are supported only on  SC1200  based
       platforms:

       Option "TV" "PAL-768x576"
	      Selects  the  PAL	 TV  display mode 768x576 and the
	      depth is forced to 16 bpp.  Default: no TV.

       Option "TV" "PAL-720x576"
	      Selects the PAL TV display  mode	720x576	 and  the
	      depth is forced to 16 bpp.  Default: no TV.

       Option "TV" "NTSC-720x480"
	      Selects  the  NTSC  TV display mode 720x480 and the
	      depth is forced to 16 bpp.  Default: no TV.

       Option "TV" "NTSC-640x480"
	      Selects the NTSC TV display mode	640x480	 and  the
	      depth is forced to 16 bpp.  Default: no TV.

       Option "TV_Output" "COMPOSITE"
	      The  selected TV mode output is coded for Composite
	      signal.  Default: no TV.

       Option "TV_Output" "SVIDEO"
	      The selected TV mode output  is  coded  for  SVIDEO
	      signal.  Default: no TV.





4.3.0			     Version				2





NSC(4)			     XFree86			   NSC(4)


       Option "TV_Output" "YUV"
	      The  selected  TV mode output is coded for YUV sig
	      nal.  Default: no TV.

       Option "TV_Output" "SCART"
	      The selected TV mode output is coded for SCART sig
	      nal.  Default: no TV.

       Option "TVOverscan" x:yy:ww:hh"
	      This option will let only the viewable display area
	      smaller to be able to view on  TV.  The  parameters
	      xx: X-offset, yy: Y-offset, ww: Viewable width, hh:
	      Viewable height.	Default: no TV.


SEE ALSO

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


AUTHOR

       Author: Sarma V. Kolluru






































4.3.0			     Version				3