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

     zx - accelerated 24-bit color frame buffer

     zx* at sbus?
     wsdisplay* at zx?

     The ZX and TurboZX are dual-slot SBus color frame buffers, with graphics
     acceleration and overlay capabilities.  They are also known as the Sun
     ``Leo'' graphics card.

     The zx 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 following resolutions are supported by the ZX frame buffer:

     Resolution	   Refresh Rate

     1280x1024	   76 Hz	   Non-interlaced
     1280x1024	   67 Hz	   Non-interlaced
     1152x900	   76 Hz	   Non-interlaced
     1152x900	   66 Hz	   Non-interlaced
     1024x768	   76 Hz	   Non-interlaced
     1024x768	   60 Hz	   Non-interlaced
     960x680	   112 Hz	   Stereo, non-interlaced

				   56 Hz field rate per eye
     960x680	   108 Hz	   Stereo, non-interlaced

				   54 Hz field rate per eye
     770x575	   50 Hz	   Interlaced - PAL
     640x480	   59.94 Hz	   Interlaced - NTSC

     If the ZX frame buffer is connected to a monitor at boot time, it will
     select its display resolution depending of the monitor `select code'
     provided by the 13W3 connector.  If the frame buffer is not connected to
     a monitor, the default resolution of 1152x900, with a 66 Hz refresh rate,
     will be selected.	The selected resolutions are:

     Monitor	   Resolution	 Refresh    Monitor
     sense code			 Rate	    Type

     0		   1024x768	 76 Hz	    X449A
     1		   1152x900	 66 Hz
     2		   1280x1024	 76 Hz	    X248A, GDM-205S
     3		   1152x900	 66 Hz	    GDM-1955A15, GDM-1604A15, CPD-1790
     4		   1280x1024	 67 Hz	    GDM-20D10, GDM-1962
     5		   1152x900	 66 Hz
     6		   1152x900	 76 Hz	    GDM-1662B, 17SMM4
     7		   1152x900	 66 Hz

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

     There is currently no software interface to change the frame buffer
     resolution at runtime.

OpenBSD 4.9			March 31, 2008			   OpenBSD 4.9

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