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Text File
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1997-10-22
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9KB
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279 lines
#
| 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.