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, com-
     monly 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 ac-
     celeration 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 follow-
     ing:

       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 avail-
                           able on TGX and TGX+.
     screen:r1024x800x85   1024x800, with a refresh rate of 85Hz.  Only avail-
                           able 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 de-
                           fault 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.

OpenBSD 4.7                     March 31, 2008                               2
