CGSIX(4)

NAME
cgsix - accelerated 8-bit color frame buffer

SYNOPSIS
cgsix* at sbus? flags 0x0
wsdisplay* at cgsix?

DESCRIPTION
The cgsix is an SBus color frame buffer with graphics acceleration, commonly found in the non ‘creator’ SBus UltraSPARC workstations.

The cgsix driver interfaces the frame buffer with the wscons(4) console framework. It does not provide direct device driver entry points but makes its functions available via the internal wsdisplay(4) interface.

Different models exist, with various memory sizes and capabilities. The cgsix driver supports the four flavours:
GX
GX+
Turbo GX (or TGX)
Turbo GX+ (or TGX+)

By default hardware acceleration is used to erase the screen and scroll text. By setting flags to 1 (via config(8) or boot_config(8)) this acceleration can be disabled.

DISPLAY RESOLUTION
If the cgsix frame buffer is used as the console display, a different resolution than the default 1152x900 can be selected by changing the OpenPROM environment. To change the default resolution, type the following:

  ok setenv output-device screen:r1280x1024x76

to change to a 76Hz 1280x1024 resolution.

If the cgsix frame buffer is a secondary display, or a serial console is used, the display resolution can not be changed without using an nvramrc OpenPROM script. Refer to the Sun Frame Buffer FAQ for details.

The cgsix frame buffer accepts the following resolutions:

screen:r1024x768x60
    Super VGA 1024x768, with a refresh rate of 60Hz. Only available on TGX and TGX+.
screen:r1024x768x70
    Super VGA 1024x768, with a refresh rate of 70Hz. Only available on TGX and TGX+.
screen:r1024x768x76
    Super VGA 1024x768, with a refresh rate of 76Hz. Only available on TGX and TGX+.
screen:r1024x800x74
    1024x800, with a refresh rate of 74Hz. Only available on TGX and TGX+.
screen:r1024x800x85
    1024x800, with a refresh rate of 85Hz. Only available on GX+, TGX and TGX+.
screen:r1152x900x66
    Standard 1152x900, with a refresh rate of 66Hz.
screen:r1152x900x76
    Standard 1152x900, with a refresh rate of 76Hz. This is the default setting on GX and TGX.
screen:r1280x1024x67
    High res 1280x1024, with a refresh rate of 67Hz. Only available on GX+ and TGX+. This is the default on GX+.
screen:r1280x1024x76
    High res 1280x1024, with a refresh rate of 76Hz. Only available on TGX+, where this is the default setting.
screen:r1600x1280x76
    High res 1600x1280, with a refresh rate of 76Hz. Only available on GX+ and TGX+.

The 1600x1280 resolution is not officially supported by Sun on the GX+.

SEE ALSO
intro(4), sbus(4), wscons(4), wsdisplay(4), boot_config(8), config(8) Sun Frame Buffer FAQ, http://www.sunhelp.org/faq/FrameBuffer.html.