CGSIX(4)              OpenBSD Programmer's Manual (SPARC)             CGSIX(4)

NAME
     cgsix - accelerated 8-bit color frame buffer

SYNOPSIS
     cgsix* at sbus?                         (sun4c and sun4m)
     cgsix0 at obio0 addr 0xfb000000 level 4 (sun4/300 P4)
     cgsix0 at obio0 addr 0x0b000000 level 4 (sun4/100 P4)
     wsdisplay* at cgsix?

DESCRIPTION
     The cgsix is a color frame buffer with graphics acceleration, available
     as an SBus card for sun4c and sun4m, or as a P4 bus card for sun4 work-
     stations.

     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 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: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 avail-
                           able on TGX and TGX+.
     screen:r1024x800x85   1024x800, with a refresh rate of 85Hz.  Only avail-
                           able 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 sin-
                           gle-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 encoun-
     tered during the use of a full-screen editor such as vi(1) on the work-
     station'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.

OpenBSD 4.7                     March 31, 2008                               2
