215 lines
7.4 KiB
Groff
215 lines
7.4 KiB
Groff
.\" $NetBSD: grfconfig.8,v 1.14 2003/02/25 10:36:08 wiz Exp $
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.\"
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.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Ezra Story and Bernd Ernesti.
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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 the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd October 7, 1994
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.Dt GRFCONFIG 8 amiga
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.Os
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.Sh NAME
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.Nm grfconfig
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.Nd alter grf device screen mode definitions at run time
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.Sh SYNOPSIS
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.Nm
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.Op Fl r
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.Ar device
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.Op Ar file
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.Sh DESCRIPTION
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.Nm
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is used to change or view the screen mode definition list contained
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in a grf device. You may alter the console screen definition as well
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as the definitions for the graphic screen. The console will automatically
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reinitialize itself to the new screen mode.
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.Pp
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The following flags and arguments are interpreted by
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.Nm :
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.Bl -tag -width indent
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.It Fl r
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Print out a raw listing of the mode definitions instead of the
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pretty list normally shown.
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.It Ar device
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The grf device to manipulate. This argument is required.
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.It Ar file
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The file which contains the mode definitions. If this argument
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is not specified,
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.Nm
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will print out of a list of the modes currently loaded into
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the grf device.
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.El
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.Sh MODE DEFINITION FILE
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The mode definitions are taken from a file which has lines of the format:
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.Pp
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num clk wid hi dep hbs hss hse ht vbs vss vse vt flags
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.Pp
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.Bl -tag -width indent
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.It Ar num
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The mode number or 'c' for the console mode.
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.It Ar clk
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The pixel clock in Hz.
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.It Ar wid
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The screen mode's width.
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.It Ar hi
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The screen mode's height.
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.It Ar dep
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The bitdepth of the mode. Use 4 for a text console mode.
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.It Ar hbs hss hse ht
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The horizontal timing parameters for the mode in pixel values. All the
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values are relative to the end of the horizontal blank (beginning of the
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displayed area).
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.It Ar vbs vss vse vt
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The vertical timing parameters for the mode in line values. All the
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values are relative to the end of vertical blank (beginning of the displayed
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area).
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.It Ar flags
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By default every mode uses negative horizontal and vertical sync pulses,
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it is non-interlaced and does not use scandoubling.
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.Pp
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.Bl -tag -width sync-on-green -offset indent
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.It default
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Use the default flags: -hsync -vsync
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.It doublescan
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Doublescan mode
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.It interlace
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Interlace mode
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.It +hsync
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Positive horizontal sync pulses
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.It -hsync
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Negative horizontal sync pulses
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.It +vsync
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Positive vertical sync pulses
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.It -vsync
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Negative vertical sync pulses
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.It sync-on-green
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Composite sync on green
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.El
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.El
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.Pp
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.Bd -literal
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------------------------------------------------------
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| ^ |
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| vse |
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| (0,0) |
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| *----------------------------------- |
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| | ^ ^ | |
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| | vbe ! | |
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| | ! | |
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| | ! | |
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|\*[Lt]-hse |\*[Lt]-hbe ! |\*[Lt]-hbs | | |
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| | ! | hss-\*[Gt]| hse-\*[Gt]| hbe-\*[Gt]|
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| | hi | | | |
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| | ! | |
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| | ! | |
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| |\*[Le]=========== wid =========+=====\*[Gt]| |
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| | ! | |
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| | ! | |
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| | ! | |
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| | v | |
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| ------------------------------------ |
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| ^ |
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| vbs |
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------------------------------------------------------
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^
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vss
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- ------- -
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^
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vse
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- ------- -
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^
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vbe
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.Ed
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.Sh SEE ALSO
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.Xr console 4 ,
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.Xr grfcl 4 ,
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.Xr grfcv 4 ,
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.Xr grfcv3d 4 ,
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.Xr grfet 4 ,
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.Xr grfrh 4 ,
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.Xr grfrt 4 ,
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.Xr grful 4 ,
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.Xr iteconfig 8
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Nx 1.0 .
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.Pp
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The mode definition file changed two times.
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.Pp
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In
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.Nx 1.0
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all horizontal values were videoclock cycle values instead of pixel values:
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.Pp
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num clk wid hi dep hbs hss hse hbe ht vbs vss vse vbe vt
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.br
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1 31000000 640 480 8 80 86 96 102 104 480 489 492 517 520
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2 31000000 640 480 8 80 86 96 102 104 240 244 246 258 260
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3 31000000 640 480 8 80 86 96 102 104 960 978 984 1034 1040
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.Pp
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In
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.Nx 1.1
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and
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.Nx 1.2 :
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.Pp
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num clk wid hi dep hbs hss hse hbe ht vbs vss vse vbe vt
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.br
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1 31000000 640 480 8 640 688 768 816 832 480 489 492 517 520
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2 31000000 640 480 8 640 688 768 816 832 240 244 246 258 260
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3 31000000 640 480 8 640 688 768 816 832 960 978 984 1034 1040
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.Pp
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the vertical values were used to select the interlace or doublescan mode.
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All vertical values were half the width for the interlace mode and twice
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the width for the doublescan mode.
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.Pp
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Beginning with
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.Nx 1.3 :
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.Pp
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num clk wid hi dep hbs hss hse ht vbs vss vse vt flags
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.br
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1 31000000 640 480 8 640 688 768 832 480 489 492 520 default
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2 31000000 640 480 8 640 688 768 832 480 489 492 520 interlace
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3 31000000 640 480 8 640 688 768 832 480 489 492 520 doublescan
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4 31000000 640 480 8 640 688 768 832 480 489 492 520 +hsync +vsync
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.Pp
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hbe and vbe are computed in the grf drivers.
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.Sh BUGS
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.Nm
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can not set the modes for
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.Pa /dev/grf1 ,
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.Pa /dev/grf2
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and
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.Pa /dev/grf4
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and it will not work for
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.Pa /dev/grf0 .
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