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+.\"	$OpenBSD: cgtwelve.4,v 1.1 2005/03/05 01:48:59 miod Exp $
+.\"
+.\" Copyright (c) 2002 Miodrag Vallat.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+.\" DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd March 4, 2005
+.Dt CGTWELVE 4 sparc64
+.Os
+.Sh NAME
+.Nm cgtwelve
+.Nd accelerated 24-bit color frame buffer
+.Sh SYNOPSIS
+.Cd "cgtwelve* at sbus?"
+.Cd "wsdisplay* at cgtwelve?"
+.Sh DESCRIPTION
+The
+.Nm
+is a triple-slot SBus color frame buffer, with graphics acceleration
+and overlay capabilities.
+.Pp
+The
+.Nm
+driver interfaces the frame buffer with the
+.Xr wscons 4
+console framework.
+It does not provide direct device driver entry points
+but makes its functions available via the internal
+.Xr wsdisplay 4
+interface.
+.Sh SEE ALSO
+.Xr agten 4 ,
+.Xr bwtwo 4 ,
+.Xr cgsix 4 ,
+.Xr cgthree 4 ,
+.Xr creator 4 ,
+.Xr intro 4 ,
+.Xr mgx 4 ,
+.Xr rfx 4 ,
+.Xr sbus 4 ,
+.Xr tvtwo 4 ,
+.Xr vgafb 4 ,
+.Xr vigra 4 ,
+.Xr wscons 4 ,
+.Xr wsdisplay 4 ,
+.Xr zx 4
+.Sh CAVEATS
+The only way to connect a
+.Nm
+frame buffer to an UltraSPARC is with the help of an
+.Xr xbox 4
+SBus Expansion subsystem.
+.Pp
+This driver does not support any acceleration features.