CGSIX(4) OpenBSD Programmer's Manual (SPARC64) 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 ALSOintro(4), sbus(4), wscons(4), wsdisplay(4), boot_config(8), config(8)
Sun Frame Buffer FAQ, http://www.sunhelp.org/faq/FrameBuffer.html.
OpenBSD 4.9 March 31, 2008 OpenBSD 4.9
