nsc - Nsc video driver

Section qDeviceq
  Identifier qdevnameq
  Driver qnscq
  ...
EndSection

nsc is an Xorg 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.

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

Please refer to xorg.conf(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 qDeviceq section.

The following driver Options are supported:

Option qSWCursorq qbooleanq

Enable or disable the SW cursor. Default: off.

Option qHWCursorq qbooleanq

Enable or disable the HW cursor. Default: on.

Option qNoAccelq qbooleanq

Disable or enable acceleration. Default: acceleration is enabled.

Option qNoCompressionq qbooleanq

Disable or enable compression. Default: compression is enabled.

Option qShadowFBq qbooleanq

Enable or disable use of the shadow framebuffer layer. Default: off.

Option qRotateq qCWq

Rotate the display clockwise. This mode is unaccelerated, and uses the Shadow Frame Buffer layer. Default: no rotation.

Option qRotateq qCCWq

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

Option qFlatPanelq qbooleanq

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

Option qOSMImageBuffersq qintegerq

This sets the number of scanline buffers to be allocated in offscreen memory for acceleration. This can take any value 0 will disable the allocation. Disabled if cannot allocate requested scanline memory. Default: 20.

Option qColorKeyq qintegerq

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 qTVq qPAL-768x576q

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

Option qTVq qPAL-720x576q

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

Option qTVq qNTSC-720x480q

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

Option qTVq qNTSC-640x480q

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

Option qTV_Outputq qCOMPOSITEq

The selected TV mode output is coded for Composite signal. Default: no TV.

Option qTV_Outputq qSVIDEOq

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

Option qTV_Outputq qYUVq

The selected TV mode output is coded for YUV signal. Default: no TV.

Option qTV_Outputq qSCARTq

The selected TV mode output is coded for SCART signal. Default: no TV.

Option qTVOverscanq xx:yy:ww:hhq

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.

Xorg(1), xorg.conf(5), xorgconfig(1), Xserver(1), X(7)

Author: Sarma V. Kolluru