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XF86_VGA16(1)					    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,
		88800CX, 88800GX

	    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  com
       mand  line  switches,  as described in the XFree86(1) man
       page.

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.




XFree86			  Version 3.1.2C			1





XF86_VGA16(1)					    XF86_VGA16(1)


       The  Driver  entry in the Screen section of the XF86Config
       file should be set to vga16.  To run in	dual-headed  con
       figuration, 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:
			  vgawonder

		      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 spec
	       ified 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 dif
	       fer from those reported when it is started from an



XFree86			  Version 3.1.2C			2





XF86_VGA16(1)					    XF86_VGA16(1)


	       80x25 text mode.

	       power_saver - This option enables  the  server  to
	       use the power saving features of VESA DPMS compat
	       ible 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 deter
       mine  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 autode
       tection 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
       &lt;XRoot&gt;/bin/XF86_VGA16	     The 16 colour X server

       /etc/XF86Config		     Server configuration file

       &lt;XRoot&gt;/lib/X11/XF86Config    Server configuration file

       Note:  &lt;XRoot&gt; 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 3.1.2C			3


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