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+.\"	$NetBSD: grfrh.4,v 1.8 2017/02/17 22:24:46 christos Exp $
+.\"
+.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
+.\" 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``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 FOUNDATION OR CONTRIBUTORS
+.\" 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 February 17, 2017
+.Dt GRFRH 4 amiga
+.Os
+.Sh NAME
+.Nm grfrh
+.Nd 8/16/24-bit color graphics driver
+.Sh SYNOPSIS
+.Cd "grfrh0 at zbus0"
+.Cd "grf2 at grfrh0"
+.Cd "ite2 at grf2"
+.Sh DESCRIPTION
+The
+.Nm
+device driver supports graphics boards with the NCR 77C32BLT chipset.
+It supports the minimal ioctl's needed to run X11.
+.Sh HARDWARE
+The
+.Nm
+interface supports the following expansion cards:
+.Bl -tag -width "xxxxxxxxxxxxx" -offset indent
+.It Em Retina BLT Z3
+A Zorro III only card. From Macro System, manufacturer 18260,
+product 16.
+.It Em Altais
+A DraCo local bus only card. From Macro System, manufacturer 18260,
+product 19.
+.El
+.Sh FILES
+.Bl -tag -width "xxxxxxxxxx" -compact
+.It Pa /dev/grf2
+graphics interface special file
+.It Pa /dev/ttye2
+console interface special file for the internal terminal emulator
+.El
+.Sh SEE ALSO
+.Xr amiga/console 4 ,
+.Xr amiga/ite 4 ,
+.Xr amiga/grfconfig 8
+.Sh HISTORY
+The
+.Nm
+interface first appeared in
+.Nx 1.0 .
+.Sh BUGS
+.Nm
+does not allow setting graphics modes with
+.Xr amiga/grfconfig 8 .