CGSIX(4) | Device Drivers Manual (sparc64) | CGSIX(4) |
cgsix
—
accelerated 8-bit color frame buffer
cgsix* at sbus? flags 0x0
wsdisplay* at cgsix?
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:
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.
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:
The 1600x1280 resolution is not officially supported by Sun on the GX+.
intro(4), sbus(4), wscons(4), wsdisplay(4), boot_config(8), config(8)
Sun Frame Buffer FAQ, http://www.sunhelp.org/faq/FrameBuffer.html.
November 1, 2015 | OpenBSD-current |