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95 lines
3.5 KiB
Groff
95 lines
3.5 KiB
Groff
.\" $NetBSD: gbox.4,v 1.7 2011/02/09 14:37:55 wiz Exp $
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.\"
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.\" Copyright (c) 1990, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Systems Programming Group of the University of Utah Computer
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.\" Science Department.
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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. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)gb.4 8.1 (Berkeley) 6/9/93
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.\"
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.Dd February 9, 2011
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.Dt GB 4 hp300
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.Os
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.Sh NAME
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.Nm gb
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.Nd
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.Tn HP98700
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.Dq Gatorbox
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graphics device interface
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.Sh SYNOPSIS
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.Cd "gbox* at intio?"
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.Cd "gbox* at dio? scode ?"
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.Cd "wsdisplay* at gbox?"
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.Sh DESCRIPTION
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This driver is for the
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.Tn HP98700
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and 98710 graphics devices, also known as
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the Gatorbox.
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The term
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.Dq Gator
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will often be used, and it is not to be confused with
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.Dq Gator
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used in reference to an
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.Tn HP
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9837 or 200/237 machine.
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Also, the term Gatorbox is used for the 98700 alone, with the 98701 frame
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buffer memory or with the 98710 accelerator installed.
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This driver merely
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checks for the existence of the device and does minimal setup, as it is
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expected the applications will initialize the device to their requirements.
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.Pp
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The 98700 can be used as the only graphics device on a system, in which case
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it will be used as the system console.
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It can also be installed as a secondary display device.
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For the first case, the
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.Tn HP
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.Tn 98287A M.A.D.
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interface card
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should be set to internal control space.
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This will put the frame buffer at
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the DIO address 0x200000 and the control registers at 0x560000.
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At this address it will be the
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.Dq preferred
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console device (see
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.Xr cons 4 ) .
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For use as a secondary device,
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the 98287A should be set to frame buffer address 0x300000,
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and to an external select code.
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.Pp
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It should be noted that this configuration will conflict with the 98547
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display card which has a 2 megabyte frame buffer starting at address 0x200000.
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The 98700 should only be installed as a secondary device in a machine with a
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1 bit 98544 display card or 4 bit 98545 card.
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The
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.%T 98700H Installation Guide
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contains further configuration information.
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.Sh SEE ALSO
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.Xr wscons 4 ,
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.Xr wsdisplay 4
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