NAME
cgsix —
accelerated 8-bit color frame
buffer
SYNOPSIS
cgsix* at sbus? (sun4c/sun4e/sun4m)
cgsix0 at obio0 addr 0xfb000000 level 4 (sun4/100 and
sun4/300 P4)
wsdisplay* at cgsix?
DESCRIPTION
The cgsix is a color frame buffer with
graphics acceleration, available as an SBus card for sun4c, sun4e and sun4m,
or as a P4 bus card for sun4 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 cgsix frame buffer 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+)
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:r1022x1000x76
- 1022x1000, with a refresh rate of 76Hz. Only available on the SPARCstation IPX on-board frame buffer.
- 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:r1024x768x77
- Super VGA 1024x768, with a refresh rate of 77Hz. Only available on the SPARCstation LX on-board frame buffer.
- 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 the SPARCstation IPX on-board frame buffer, as well as on GX+, TGX and TGX+.
- screen:r1152x900x66
- Standard 1152x900, with a refresh rate of 66Hz. This is the default setting on the dual-slot GX models (501-1481 and 501-1645).
- screen:r1152x900x76
- Standard 1152x900, with a refresh rate of 76Hz. This is the default setting on the on-board or single-slot GX models, as well on TGX.
- screen:r1280x1024x67
- High res 1280x1024, with a refresh rate of 67Hz. Only available on the SPARCstation LX with the VSIMM installed, as well as 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 the SPARCstation LX with the VSIMM installed, as well as 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)
Sun Frame Buffer FAQ, http://www.sunhelp.org/faq/FrameBuffer.html.
BUGS
Several firmware revisions of the cgsix,
in particular those found in the SPARCstation 5, have a bug that occurs when
the screen control sequences for inserting blank lines (e.g., the control
sequences produced by the ‘al’ and ‘AL’
capabilities found in the
termcap(5) database) are used near the bottom end of the screen. This
bug is most likely to be encountered during the use of a full-screen editor
such as vi(1) on the workstation's console.
To work around this bug, the TERM
environment variable should be set to ‘sun-ss5’, which is the
same as the ‘sun’ entry except without the ‘al’
and ‘AL’ capabilities.