87 lines
2.8 KiB
Groff
87 lines
2.8 KiB
Groff
.\"
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.\" Copyright (c) 1997 Jonathan Stone.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Jonathan Stone.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $NetBSD: px.4,v 1.1 1997/11/08 07:27:56 jonathan Exp $
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.\"
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.Dd November 11, 1997
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.Dt PX 4 pmax
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.Os NetBSD 1.3
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.Sh NAME
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.Nm px
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.Nd
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TURBOChannel PMAG-C 2-D accelerated graphics board
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.Sh SYNOPSIS
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.Cd "px* at tc?"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides minimal support for a
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.Tn DEC
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.Tn PMAG-C
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video display option card.
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The
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.Nm
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driver does nothing except remove the requirement to remove
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.Tn PMAG-C
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cards in order to boot
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.Nx .
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It offers no support for either raster consoles
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or X11 servers.
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To do either requires using the undocumented packet
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protocol used to talk to the on-board blitter chip.
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.Pp
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.Sh SEE ALSO
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.Xr rcons 4 ,
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.Xr tc 4 ,
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.Xr ws 4 .
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.Sh BUGS
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.Pp
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Console output support and X11 server support should be implemented.
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They are not.
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.Pp
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The
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.Nm rcons
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glass-tty raster framebuffer console driver assumes
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direct bit read/write access to a framebuffer. The
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.Nm
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hardware does not provide this.
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.Nm rcons
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should be replaced with a driver that allows a character-painting
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interface as well as direct blitting.
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.Pp
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The only known X
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server is an Ultrix binary which requires emulation of the Ultrix Xws
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ABI. Work on this is in progress.
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.Sh HISTORY
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The
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.Nm
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driver
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first appeared in
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.Nx 1.3 .
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