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+.\"	$OpenBSD: pninek.4,v 1.1 2003/06/18 17:40:31 miod Exp $
+.\"
+.\" Copyright (c) 2003, Miodrag Vallat.
+.\" Copyright (c) 1999 Jason L. Wright (jason@thought.net)
+.\" 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 June 16, 2003
+.Dt PNINEK 4 sparc
+.Os
+.Sh NAME
+.Nm pninek
+.Nd Weitek Power9000 accelerated frame buffer
+.Sh SYNOPSIS
+.Cd "btcham0 at obio?"
+.Cd "pninek at sbus? slot ? offset ?"
+.Cd "wsdisplay* at pninek?"
+.Sh DESCRIPTION
+The
+.Nm
+is a color frame buffer with graphics acceleration, embedded in the
+.Tn "Tadpole SPARCbook"
+3 laptop.
+It is based on the
+.Tn "Weitek Power9000"
+video processor and a
+.Tn Brooktree
+Bt445
+.Sq Chameleon
+RAMDAC.
+.Pp
+Due to specifics of the video hardware on the
+.Tn Tadpole SPARCbook
+3, the complete driver is split in two parts:
+.Pp
+.Bl -tag -width Ds -compact
+.It Nm btcham
+RAMDAC interface
+.It Nm pninek
+Video controller interface
+.El
+.Pp
+The combination of both
+.Nm btcham
+and
+.Nm
+drivers interfaces the frame buffer with the
+.Xr wscons 4
+console framework.
+They do not provide direct device driver entry points
+but make their function available via the internal
+.Xr wsdisplay 4
+interface.
+.Pp
+If the
+.Xr tctrl 4
+device is also configured, the
+.Nm
+will be powered down when the lid of the laptop
+is closed or the screen is blanked.
+.Sh SEE ALSO
+.Xr agten 4 ,
+.Xr bwtwo 4 ,
+.Xr cgeight 4 ,
+.Xr cgfour 4 ,
+.Xr cgfourteen 4 ,
+.Xr cgsix 4 ,
+.Xr cgthree 4 ,
+.Xr cgtwelve 4 ,
+.Xr cgtwo 4 ,
+.Xr intro 4 ,
+.Xr mgx 4 ,
+.Xr pnozz 4 ,
+.Xr sbus 4 ,
+.Xr tctrl 4 ,
+.Xr tcx 4 ,
+.Xr tvtwo 4 ,
+.Xr vigra 4 ,
+.Xr wscons 4 ,
+.Xr wsdisplay 4 ,
+.Xr zx 4
+.Sh BUGS
+There is currently no way to switch back and forth from
+the onboard display to the external connector.
+It is not possible to change resolutions.