.\" $OpenBSD: grfconfig.8,v 1.12 2001/03/26 05:37:28 aaron Exp $ .\" $NetBSD: grfconfig.8,v 1.4 1997/07/29 17:40:47 veego Exp $ .\" .\" Copyright (c) 1997 The NetBSD Foundation, Inc. .\" All rights reserved. .\" .\" This code is derived from software contributed to The NetBSD Foundation .\" by Ezra Story and Bernd Ernesti. .\" .\" 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. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the NetBSD .\" Foundation, Inc. and its contributors. .\" 4. Neither the name of The NetBSD Foundation nor the names of its .\" contributors may be used to endorse or promote products derived .\" from this software without specific prior written permission. .\" .\" 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 REGENTS 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 October 7, 1994 .Dt GRFCONFIG 8 amiga .Os .Sh NAME .Nm grfconfig .Nd alter grf device screen mode definitions at run time .Sh SYNOPSIS .Nm grfconfig .Op Fl r .Ar device .Op Ar file .Sh DESCRIPTION .Nm is used to change or view the screen mode definition list contained in a grf device. You may alter the console screen definition as well as the definitions for the graphic screen. The console will automatically reinitialize itself to the new screen mode. .Pp The following flags and arguments are interpreted by .Nm grfconfig : .Bl -tag -width indent .It Fl r Print out a raw listing of the mode definitions instead of the pretty list normally shown. .It Ar device The grf device to manipulate. This argument is required. .It Ar file The file which contains the mode definitions. If this argument is not specified, .Nm will print out of a list of the modes currently loaded into the grf device. .El .Sh MODE DEFINITION FILE The mode definitions are taken from a file which has lines of the format: .Pp num clk wid hi dep hbs hss hse ht vbs vss vse vt flags .Pp .Bl -tag -width indent .It Ar num The mode number or .Dq c for the console mode. .It Ar clk The pixel clock in Hz. .It Ar wid The screen mode's width. .It Ar hi The screen mode's height. .It Ar dep The bitdepth of the mode. .It Ar hbs hss hse ht The horizontal timing parameters for the mode in pixel values. All the values are relative to the end of the horizontal blank (beginning of the displayed area). .It Ar vbs vss vse vt The vertical timing parameters for the mode in line values. All the values are relative to the end of vertical blank (beginning of the displayed area). .It Ar flags By default every mode uses negative horizontal and vertical sync pulses; it is non-interlaced and does not use scandoubling. .Pp .Bl -tag -width sync-on-green -offset indent -compact .It default use the default flags: -hsync -vsync .It doublescan doublescan mode .It interlace interlace mode .It +hsync positive horizontal sync pulses .It -hsync negative horizontal sync pulses .It +vsync positive vertical sync pulses .It -vsync negative vertical sync pulses .It sync-on-green composite sync on green .El .El .Pp .nf ------------------------------------------------------ | ^ | | vse | | (0,0) | | *----------------------------------- | | | ^ ^ | | | | vbe ! | | | | ! | | | | ! | | |<-hse |<-hbe ! |<-hbs | | | | | ! | hss->| hse->| hbe->| | | hi | | | | | | ! | | | | ! | | | |<============ wid =========+=====>| | | | ! | | | | ! | | | | ! | | | | v | | | ------------------------------------ | | ^ | | vbs | | | ------------------------------------------------------ ^ vss - ------- - ^ vse - ------- - ^ vbe .Sh HISTORY The .Nm command first appeared in .Nx 1.0 .Pp The mode definition file changed two times. .Pp In .Nx 1.0 all horizontal values were videoclock cycle values instead of pixel values: .Bd -literal num clk wid hi dep hbs hss hse hbe ht vbs vss vse vbe vt 1 31000000 640 480 8 80 86 96 102 104 480 489 492 517 520 2 31000000 640 480 8 80 86 96 102 104 240 244 246 258 260 3 31000000 640 480 8 80 86 96 102 104 960 978 984 1034 1040 .Ed .Pp In .Nx 1.1 and .Nx 1.2 : .Bd -literal num clk wid hi dep hbs hss hse hbe ht vbs vss vse vbe vt 1 31000000 640 480 8 640 688 768 816 832 480 489 492 517 520 2 31000000 640 480 8 640 688 768 816 832 240 244 246 258 260 3 31000000 640 480 8 640 688 768 816 832 960 978 984 1034 1040 .Ed .Pp the vertical values were used to select the interlace or doublescan mode. All vertical values were half the width for the interlace mode and twice the width for the doublescan mode. .Pp Beginning with .Nx 1.3 : .Bd -literal num clk wid hi dep hbs hss hse ht vbs vss vse vt flags 1 31000000 640 480 8 640 688 768 832 480 489 492 520 default 2 31000000 640 480 8 640 688 768 832 480 489 492 520 interlace 3 31000000 640 480 8 640 688 768 832 480 489 492 520 doublescan 4 31000000 640 480 8 640 688 768 832 480 489 492 520 +hsync +vsync .Ed .Pp hbe and vbe are computed in the grf drivers. .Sh BUGS .Nm cannot set the modes for .Pa /dev/grf1 , .Pa /dev/grf2 , or .Pa /dev/grf4 and it will not work for .Pa /dev/grf0 .