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

NAME
     cgfourteen - accelerated 8/24-bit color frame buffer

SYNOPSIS
     cgfourteen0 at obio0 addr 0x9c000000 (SS10SX and SS20)
     cgfourteen1 at obio0 addr 0x90000000 (SS10SX and SS20)
     wsdisplay* at cgfourteen?

DESCRIPTION
     The cgfourteen is the on-board color frame buffer, with graphics
     acceleration and overlay capabilities, found on the SPARCstation 10SX and
     SPARCstation 20 workstations.  The frame buffer will not be enabled
     unless a VSIMM memory module is installed.

     The second frame buffer will also require an `Auxiliary Video Board' to
     be installed.

     The cgfourteen 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.

DISPLAY RESOLUTION
     If the cgfourteen 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:r1280x1024x66

     to change to a 66Hz 1280x1024 resolution.

     If the cgfourteen 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 cgfourteen frame buffer accepts the following resolutions:

   Supported Video Modes
     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.
     screen:r1280x1024x66   High res 1280x1024, with a refresh rate of 66Hz.

   Unsupported Video Modes
     The following video modes are supported by the hardware, but not by Sun.

     screen:r1024x768x60    Super VGA 1024x768, with a refresh rate of 60Hz.
     screen:r1024x768x66    Super VGA 1024x768, with a refresh rate of 60Hz.
     screen:r1024x768x70    Super VGA 1024x768, with a refresh rate of 70Hz.
     screen:r1024x800x84    1024x800, with refresh rate of 84Hz.
     screen:r1280x1024x76m  High res 1280x1024, with a refresh rate of 76Hz.
			    There is no typo, the `m' suffix is required.
     screen:r1600x1280x66   High res 1600x1280, with a refresh rate of 66Hz.
     screen:r1920x1080x72   1920x1080, with a refresh rate of 72Hz.

     Resolutions of 1280x1024, 1600x1280 and 1920x1080 are 8-bit only with 4MB
     VSIMM.

SEE ALSO
     intro(4), wscons(4), wsdisplay(4)

     Sun Frame Buffer FAQ, http://www.sunhelp.org/faq/FrameBuffer.html.

OpenBSD 4.9			March 31, 2008			   OpenBSD 4.9

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