mgx man page on OpenBSD

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MGX(4)		     OpenBSD Programmer's Manual (SPARC64)		MGX(4)

     mgx - SMS MGX and MGXPlus accelerated 8/24-bit color frame buffers

     mgx* at sbus?
     wsdisplay* at mgx?

     The Southland Media Systems (now Quantum 3D) MGX and MGXPlus are SBus
     color frame buffers, with graphics acceleration capabilities.

     The mgx 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.

     The MGX and MGXPlus frame buffers will adapt their resolution to the
     monitor they are connected to.  However, when not connected to a Sun
     monitor, the device will default to the cgthree(4)-compatible 1152x900
     resolution, with a refresh rate of 66Hz.  A different resolution can be
     forced using the set of DIP switches (sometimes covered by metal foil)
     located near the SBus connector on the board itself.

     The DIP switch settings are as follows:

     Switches		 Resolution    Refresh	  Details
       1   2   3   4		      Rate

     OFF OFF OFF OFF	 1024x768      77Hz
     OFF ON  OFF OFF	 1280x1024     76Hz
     ON	 ON  OFF OFF	 1152x900      66Hz
     OFF OFF ON	 OFF	 1152x900      76Hz
     OFF ON  ON	 OFF	 1152x900      77Hz
     ON	 ON  ON	 OFF	 1152x900      66Hz	  cgthree compatible
     ON	 ON  OFF ON	 1152x900      66Hz	  cgsix compatible
     OFF OFF ON	 ON	 1280x1024     67Hz
     ON	 ON  ON	 ON	 probed	       probed	  factory default

     All other combinations are unsupported and may damage the hardware.

     intro(4), sbus(4), wscons(4), wsdisplay(4)

     This driver does not support mode switching at the moment, and drives the
     card in PROM-compatible, 8 bit, mode only.

OpenBSD 4.9			April 15, 2008			   OpenBSD 4.9

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