        #
        | README file for XREFRESH.EXE, Version 1.15
        |
        | Copyright (c) 1994-97 ELSA AG, Aachen (Germany)
        |
        | ELSA AG                    Internet   : http://www.elsa.de
        | Sonnenweg 11               LocalWeb   : +49-(0)241-938800
        | D-52070 Aachen             CompuServe : GO ELSA
        |
        | ELSA Inc.                  Internet   : http://www.elsa.com
        | 2231 Calle De Luna         CompuServe : GO ELSA
        | Santa Clara, CA 95054
        | USA
        |
        | ELSA Asia Inc.             Internet   : http://www.elsa.com
        | 7F-11, No. 188, Sec. 5     CompuServe : GO ELSA
        | Nanking East Road
        | Taipeo 105
        | Taiwan, R. O. C.
        |
        | 10/23/97, mgroegor


	Contents

	1.      Overview
        2.      Disk/CD Contents
	3.      Installation
	4.      Usage Notes
        4.1     DDC  ( VESA Display Data Channel)
        4.2     Command Line Parameters
        4.3     Problems
	5.      Release Notes
        5.1     Supported graphics boards
	5.2     Monitor Frequency Limits
	5.3     Refresh Rates for VGA Modes
	6.      Restrictions / Known Problems
	6.1     Permanent Setting
	6.2     VGA Modes with High Refresh Rate


------------------------------------------------------------------------

1.      Overview

        XREFRESH.EXE is a utility to set the display refresh rate of
        VGA and VESA graphics modes of the ELSA graphics boards.

        See the Release Notes section 5.1 for a list of supported
        graphics boards.


------------------------------------------------------------------------

2.      Disk/CD Contents

        The program disk/CD contains the following files:

        XREFRESH.EXE    the executable program
        XREFRS_E.TXT    this text file, including notes on the current
			program release
        XREFRS_D.TXT    German version of the text you are currently
			reading


------------------------------------------------------------------------

3.      Installation

        To use this utility, please copy the file XREFRESH.EXE from the
	disk to a directory on your hard disk. This directory should be
	included in your DOS path (environment variable PATH).

	If you want to use this utility permanently, you should call it
	in your AUTOEXEC.BAT file to set the refresh rate automatically
	each time your system is started.


------------------------------------------------------------------------

4.      Usage Notes

4.1     DDC  (VESA Display Data Channel)

        If your ELSA graphics board and the connected monitor support
        VESA DDC1 or DDC2B, please call XREFRESH without any parameter
        on command line.

        DDC information about the monitor is read via graphics board.
        Using this information, XREFRESH analyses the maximum sweep rate
        of your DDC monitor. With the sweep rate XREFRESH calulates the
        maximum refresh rate for each graphics mode resolution.

        This establishes an optimal configuration for your monitor.


        Hint:

        - Only fixed refresh rates, which are implemented in graphics board
          BIOS, can be used.

        - If you are using a DDC1 graphics board, the display will be
          blanked for about one secound.

        - Our first experiences with DDC monitors (proto types) show,
          that sometimes the DDC information returned from monitor differs
          from the monitor specification. XREFRESH displays the maximum
          available sweep rate of the monitor. If the displayed maximum
          sweep rate is above or extreme below the monitor specification,
          the monitor shows a strange behaviour.  Under these
          circumstances consult the monitor documentation or contact the
          monitor manufacturer.

        - Should the automatic refresh rate setting using the DDC standard
          fail, you can configure the refresh rate via command line parameter
          as described in the next paragraph.

          If the automatic refresh rate setting fails, the sweep rate will
          be unneccessary slow, the monitor will flicker and shows a distort
          display or the the monitor will produce a high frequency tone.


4.2     Command Line Parameters


      - XREFRESH [(VESA-refresh-rate)Hz]

                                45Hz
                                49Hz
                                60Hz
                                67Hz
                                70Hz
                                72Hz
                                75Hz
                                85Hz

	This will set the given refresh rate in Hertz for all VESA
	resolutions, as long as your hardware supports this setting;
	otherwise the next lower refresh rate is used instead.

        Example: XREFRESH 75Hz
	For the VESA resolutions from 640 up to 1280 pixels, a refresh
	rate of 75 Hz is set. The setting will become effective the
	next time a VESA mode is started.


      - A setting for individual resolutions is possible as follows:

        XREFRESH [(resolution VESA-refresh-rate)Hz]

	Allowed values for the resolution are:

				640
				800
			       1024
                               1152  (not supported on all boards)
			       1280
                               1600

        Example: XREFRESH 1280 75Hz
	The next time a VESA mode with a resolution of 1280 x 1024
	pixels is used, a refresh rate of 75 Hz will be set.


      - You may also set several refresh rates for different
	resolutions in one single call:

        XREFRESH [(resolution1 refresh1)Hz] [(resolution2 refresh2)Hz] [...]

        Example: XREFRESH 1600 60Hz 1280 60Hz 1024 70Hz 800 72Hz 640 75Hz

        An individual refresh rate is assigned to each of the
	resolutions:

                640 x  480 pixels  75 Hz
		800 x  600 pixels  72 Hz
	       1024 x  768 pixels  70 Hz
	       1280 x 1024 pixels  60 Hz
               1600 x 1200 pixels  60 Hz

      - XREFRESH [VGA-refresh-rate]

        ( This option is not supported by the WINNER 1000ISA! )

        XREFRESH accepts the following parameters as VGA refresh
	rates (upper or lower case allowed):

				VGASTD
				VGAHIGH

        Example: XREFRESH VGAHIGH

	"VGASTD" sets the refresh rate for the VGA modes 0 to 13 to
	the standard VGA value (horizontal scan frequency 31.5 kHz).
	Depending on the graphics mode, this will result in refresh
	rates of 60 or 70 Hz.

        "VGAHIGH" increase the refresh rate by approximately 25% for
        the VGA modes 0 to 13 (horizontal scan frequency 39.4 kHz).
        Depending on the graphics mode, this will result in refresh
        rates of 75 or 87.5 Hz.

	At text modi 3 and 7 immediatly the new settings becomes
        effective. The monitor is syncronized again.

4.3     Problems

	If you come across any errors or problems using this utility,
	please note the exact program version number, the command line
	parameters and other circumstances, under which the error or
	problem occurred. This will make it easier for us to track down
	the source of your problem.

	You may tell us your problems via our Support BBS ELSA ONLINE,
	or send them to us in written form.


------------------------------------------------------------------------

5.      Release Notes

5.1     Supported graphics boards

          WINNER 1000ISA
          WINNER 1000TRIO
          WINNER 1000TRIOV
          WINNER 1000/T2D
          WINNER 1000AVI
          WINNER 1000PRO/X
          WINNER 2000AVI
          WINNER 2000AVI/3D
          WINNER 2000PRO/X
          VICTORY 3D
          VICTORY 3DX
          GLoria
          WINNER 3000-S
          WINNER 3000-M
          WINNER 3000-L


5.2     Monitor Frequency Limits

	For the VGA high refresh timing (VGAHIGH), the monitor connected
	to the graphics board must allow a horizontal scan frequency of
	at least 39.7 kHz and a refresh rate of at least 87.5 Hz.

	The maximum allowed horizontal scan frequency of the monitor
	(sweep rate) must not be exceeded!


5.3     Refresh rates for VGA modes

	The command line parameters "VGAHIGH" and "VGASTD" were added
	to set the standard VGA display timings to high or normal
	refresh rates.


------------------------------------------------------------------------

6.      Restrictions / Known Problems

6.1     Permanent Setting

	This program does not allow a permanent setting of the refresh
	rates. It must be called each time the operating system is
	started.

	This is most easily done by calling the program in your
	AUTOEXEC.BAT file.


6.2     VGA Modes with High Refresh Rate

        ( This option is not supported by the WINNER 1000ISA! )

	The refresh rates set with the "VGAHIGH" option are no standard
	values. Therefore, it is possible that some high refresh VGA
	modes are not properly displayed on some monitors.
