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-.\"	$OpenBSD: pninek.4,v 1.10 2015/11/21 08:04:20 jmc 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 $Mdocdate: November 21 2015 $
-.Dt PNINEK 4 sparc
-.Os
-.Sh NAME
-.Nm pninek ,
-.Nm btcham
-.Nd Weitek Power9000 accelerated frame buffer
-.Sh SYNOPSIS
-.Cd "btcham0 at obio?"
-.Cd "pninek0 at sbus?"
-.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 -offset indent
-.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 intro 4 ,
-.Xr sbus 4 ,
-.Xr wscons 4 ,
-.Xr wsdisplay 4
-.Sh BUGS
-There is currently no way to switch back and forth from
-the onboard display to the external connector.
-.Pp
-It is not possible to change display resolution.
-.Pp
-Acceleration code does not work correctly, and is therefore disabled.