XF86_VGA16

XF86_VGA16(1)               General Commands Manual              XF86_VGA16(1)



NAME
       XF86_VGA16 - 4 bit non-accelerated X Window System server for UNIX on
       x86 platforms

SYNOPSIS
       XF86_VGA16 [:displaynumber] [ option ] ...

DESCRIPTION
       XF86_VGA16 is a 4-bit color server for VGA cards.  The default root
       visual for this server is StaticColor.  It also includes support for
       the non-VGA monochrome cards described in the XF86_Mono(1) manual page.
       It may be run in a dual-headed configuration.

CONFIGURATIONS
       The XF86_VGA16 server supports the following popular SVGA chipsets in
       16-colour mode.

            ATI:
                18800, 18800-1, 28800-2, 28800-4, 28800-5, 28800-6, 68800-3,
                68800-6, 68800AX, 68800LX, 88800GX-C, 88800GX-D, 88800GX-E,
                88800GX-F, 88800CX, 264CT, 264ET, 264VT, 264VT2, 264GT

            Tseng:
                ET4000

            Trident:
                TVGA8800CS, TVGA8900B, TVGA8900C, TVGA8900CL, TVGA9000

            Cirrus:
                CL6410, CL6412, CL6420, CL6440

            Oak:
                OTI067, OTI077, OTI087

       Additionally it supports generic VGA cards.

       XF86_VGA16 does not support the accelerated functions of the supported
       chipsets.

OPTIONS
       In addition to the normal server options described in the Xserver(1)
       manual page, XF86_VGA16 accepts some more command line switches, as
       described in the XFree86(1) manpage.

SETUP
       XFree86 uses a configuration file called XF86Config for its initial
       setup.  See the XF86Config(4/5) manpage for general details. Here only
       the XF86_VGA16 specific parts are explained.

       The Driver entry in the Screen section of the XF86Config file should be
       set to vga16.  To run in dual-headed configuration, there should also
       be a Screen section with the Driver entry set to mono.

       Entries for the Device section in the XF86Config file include:

       chipset "name"
               specifies a chipset so the correct driver can be used.
               Possible chipsets are:


                      ATI:
                          ati (see README.ati for additional recoginzed names)

                      Tseng:
                          et4000, et4000w32, et4000w32i, et4000w32p

                      Trident:
                          tvga8800cs, tvga8900b, tvga8900c, tvga8900cl,
                          tvga9000

                      Cirrus:
                          cl6410, cl6412, cl6420, cl6440

                      Oak:
                          oti067, oti077, oti087

                      Generic VGA:
                          generic

       Option "optionstring"
               allows the user to select certain options provided by the
               drivers.  Currently the following strings are recognized:

               legend - for Sigma Legend ET4000-based boards.  This option
               enables a special clock-selection algorithm used on Legend
               boards, and MUST be specified for these boards to function
               correctly.

               hibit_low, hibit_high - for Tseng ET4000 chipsets.  With some
               ET4000 cards, the server has difficulty getting the state of
               the high-order clocks select bit right when started from a
               high-resolution text mode.  These options allow the correct
               initial state of that bit to be specified.  To find out what
               the correct initial state is, start the server from an 80x25
               text mode.  This option is only needed if the clocks reported
               by the server when started from a high-resolution text mode
               differ from those reported when it is started from an 80x25
               text mode.

               clkdiv2 - for all chipsets using a set of discrete clocks (i.e.
               not using a programmable ClockChip or a ClockProg). With this
               option enabled, the VGA driver can also use all the clocks
               mentionned in the clocks line divided by 2, presenting the
               server with twice as many clocks to choose from, especially in
               the low- and mid-range. This is useful for creating very low
               resolution modes like 320x200, because the lowest available
               clock on many cards (25.175 MHz) is too high to create a
               standard 320x200 mode. A few VGA chips don't support this
               option, causing a distorted screen.

               power_saver - This option enables the server to use the power
               saving features of VESA DPMS compatible monitors.  The suspend
               level is currently not supported.  Refer to the XF86Config(4/5)
               manual page for details of how to set the timeouts for the
               different levels of operation.  This option is experimental.

       Note that XFree86 has some internal capabilities to determine what
       hardware it is running on. Thus normally the keywords chipset, clocks,
       and videoram don't have to be specified.  But there may be occasions
       when this autodetection mechanism fails, (for example, too high of load
       on the machine when you start the server).  For cases like this, one
       should first run XF86_VGA16 on an unloaded machine, look at the results
       of the autodetection (that are printed out during server startup) and
       then explicitly specify these parameters in the configuration file.  It
       is recommended that all parameters, especially Clock values, be
       specified in the XF86Config file.

FILES
       <XRoot>/bin/XF86_VGA16        The 16 colour X server

       /etc/XF86Config               Server configuration file

       <XRoot>/lib/X11/XF86Config    Server configuration file

       Note: <XRoot> refers to the root of the X11 install tree.

SEE ALSO
       X(1), Xserver(1), XFree86(1), XF86Config(4/5), XF86_Mono(1),
       xf86config(1), xvidtune(1), xdm(1), xinit(1)

CONTACT INFO
       XFree86 source is available from the FTP server ftp.XFree86.org.  Send
       email to XFree86@XFree86.org for details.

AUTHORS
       The primary developer of this server is

       Gertjan Akkerman,  akkerman@dutiba.twi.tudelft.nl

       See also the XFree86(1) manual page.



XFree86                           Version 3.3                    XF86_VGA16(1)