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
cannot 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.