1.\" 2.\" Copyright (c) 1999 3.\" Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer as 11.\" the first lines of this file unmodified. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/share/man/man4/vga.4,v 1.7.2.10 2002/12/20 18:03:05 trhodes Exp $ 28.\" 29.Dd August 14, 2015 30.Dt VGA 4 31.Os 32.Sh NAME 33.Nm vga 34.Nd generic video card interface 35.Sh SYNOPSIS 36.Cd "options VGA_KEEP_POWERON_MODE" 37.Cd "options VGA_NO_FONT_LOADING" 38.Cd "options VGA_NO_MODE_CHANGE" 39.Cd "options VGA_DEBUG=N" 40.Cd "options VGA_WIDTH90" 41.Cd "device vga0 at isa? port ?" 42.Sh DESCRIPTION 43The 44.Nm 45driver is a generic video card driver which provides access to 46video cards. 47This driver is required for the console driver 48.Xr syscons 4 . 49The console driver will call the 50.Nm 51driver to manipulate video hardware (changing video modes, loading font, etc). 52.Pp 53The 54.Nm 55driver supports the standard VGA video cards. 56.Sh DRIVER CONFIGURATION 57.Ss Kernel Configuration Options 58The following kernel configuration options 59(see 60.Xr config 8 ) 61can be used to control the 62.Nm 63driver. 64These options provide compatibility with certain VGA cards. 65.Bl -tag -width ".Dv VGA_KEEP_POWERON_MODE" 66.It Dv VGA_DEBUG=N 67Set the VGA support debug level to 68.Fa N . 69The default value is 0, which suppresses all debugging output. 70A value of 2 gives maximum verbosity. 71.It Dv VGA_KEEP_POWERON_MODE 72This option keeps the initial mode's register settings for switching back 73to it from another mode. 74.It Dv VGA_WIDTH90 75This option enables 90 column modes: 90x25, 90x30, 90x43, 90x50, 90x60. 76These modes are not always supported by the video card and the display. 77It is highly likely that LCD display cannot work with these modes. 78.El 79.Pp 80The following options will remove some features from the 81.Nm 82driver and save kernel memory. 83.Bl -tag -width ".Dv VGA_KEEP_POWERON_MODE" 84.It Dv VGA_NO_FONT_LOADING 85This option removes font loading from the driver. 86Note that if you use this option and 87still wish to use the mouse on the console then you must also use the 88.Dv SC_ALT_MOUSE_IMAGE 89option. 90See 91.Xr syscons 4 . 92.It Dv VGA_NO_MODE_CHANGE 93This option prevents the driver from changing video modes. 94.El 95.Sh EXAMPLES 96Your kernel configuration should normally have: 97.Pp 98.D1 Cd "device vga0 at isa? port ?" 99.Sh SEE ALSO 100.Xr vgl 3 , 101.Xr syscons 4 , 102.Xr config 8 , 103.Xr kldload 8 , 104.Xr kldunload 8 105.Sh STANDARDS 106.Rs 107.%A "Apple, IBM, Motorola" 108.%T "Common Hardware Reference Platform: I/O Device Reference" 109.%B "Appendix A: VGA Programming Model" 110.%P "p. 195" 111.%O "ftp://ftp.software.ibm.com/rs6000/technology/spec/chrp/" 112.Re 113.Sh HISTORY 114The 115.Nm 116driver first appeared in 117.Fx 3.1 . 118.Sh AUTHORS 119.An -nosplit 120The 121.Nm 122driver was written by 123.An S\(/oren Schmidt Aq Mt sos@FreeBSD.org 124and 125.An Kazutaka Yokota Aq Mt yokota@FreeBSD.org . 126This manual page was written by 127.An Kazutaka Yokota . 128