miro Computer Products AG                                 01/07/1997

                                                        Version 2.00


miroCRYSTAL VR2000/4000
=======================


Important hint for DC30 and PCTV users:
=======================================
The recent introduction of Microsoft´s DirectX technology has made it
possible to use the free memory of a graphics board for an overlay by
transferring the video data directly via the PCI bus. In addition, 
DirectX introduces many new functions which are especially suited for 
computer games.

New technologies, however, may also lead to problems. On some earlier
systems the combination of DirectX-3, the optimized miro drivers, and 
the DC30 board may cause trouble.
For this reason, miro has decided to offer two driver concepts: 
the optimized ones and drivers which have been especially designed for 
Digital Video applications.
For this reason digital Video users (DC20, DC30, PCTV) will find a 
special Digital Video driver version in the \Disksets\DVEDRV\ directory
on the installation CD.


In addition to the miroCRYSTAL VR2000/4000 system software, 
this CD contains the following components:

        Windows 95                                              
        ----------
        1. Microsoft DirectX
        2. ActiveMovie 1.0


        Windows NT 4.0  
        --------------
        1. DirectDraw compatible Display drivers        

        
        Windows NT  3.51
        ----------------
        1. Display driver       


        CAD drivers
        -----------
        1. Autocad 10, 11, 12, 13
        2. DOS Version 3D-Studio

        
        Windows 3.x
        -----------
        1. Native S3 driver
        2. S3 Refresh
        3. S3 VBE 3.x
        4. Galileo Configuration Tool

        
        OS/2 Warp
        ---------
        1. Display driver




Important hints on Windows 95:
==============================

miroCRYSTAL VR is a state-of-the-art highly-integrated graphics adapter 
which also includes a 3D Engine. To achieve the complete functionality, 
however, the "DirectDraw" system extension by Microsoft 
is required. Since Windows 95 does not include DirectDraw yet, 
you should first install the complete "DirectX" software on your computer. 
You can install "DirectX" easily using the "WINDOWS 95 driver" install option
in the SETUP-MANAGER menu of your CD.

After you installed "DirectDraw" via the "DirectX" installation, 
you should install the miro graphics drivers which offer high refresh rates
and optimize the graphics output.  




Installing the miro graphics drivers and miroWINTOOLS for Windows 95:
=====================================================================

Note:   You can install the miro Windows 95 drivers either using the 
        setup program on the supplied CD or the Display icon contained
        in the Control Panel.      

These miro Windows 95 drivers are only suited for the 
miroCRYSTAL VR2000/4000 boards in the single-screen solution.
     
The so-called Twinface mode (dual-screen solutions 
of two of these graphics boards or combinations of different boards) 
are not supported!!!


Important hints on the installation and the re-installation:
============================================================


Note: With early Windows 95 versions, serious problems may occur
      with the automatic hardware detection when re-installing Windows95.
      You can avoid this Windows 95 problem by disabling the automatic 
      detection using the "Hardware assistant" and selecting "Standard
      graphics board" under "Graphics board" (also see 4.). 
      In later Windows 95 versions this error has been corrected.      


1.) Please do not use the miro Windows 3.x drivers under Windows 95. 
    If you have done so already or tried to do so, make sure that all 
    old miro Windows 3.x drivers and entries will be removed from the 
    SYSTEM.INI file.
    
2.) If you use a miro monitor or a multifrequency monitor, we recommend to
    use the Miromon.inf file contained on this installation CD. Using  
    Miromon.inf guarantees that the special parameters suited for your 
    monitor are used. In the "Display Properties" dialog, select "Change 
    configuration".
    By clicking "Change" in the "Monitor" field, you go to the monitor model
    selection. By clicking the "Have disk" and the "Browse" buttons 
    you go to a file selection window. Select the installation
    CD under "Drives" to go to the miroCRYSTAL VR installation directory. 
    In this way, the mirodisp.inf and miromon.inf files are automatically 
    selected. Click "OK" to go to the miroMONITOR selection list. 
    Select the monitor you use. 

    Note: Please do not try to "soup up" your monitor by selecting frequencies
          which exceed the monitor´s frequencies. In this way, you will 
          definitely damage your monitor. These cases are not covered by the
          warranty!                                  

    Please make sure that no old OEM*.INF monitor file is located in your 
    Win95\INF directory. These INF files are ASCII files you 
    can view using the Notepad. Before removing these files make sure that
    you do not delete the wrong files. If you use the miro monitor files 
    contained on the original Windows 95 CD, we recommend again to use the
    monitor files on the installation CD.

3.) For each graphics drivers installation Windows 95 creates a new OEM*.INF
    file in the Win95\INF directory. Windows 95, however, does not remove 
    the old OEM*.INF files. Please make sure that only the current OEM*.INF
    files are located in the directory and remove the old files. 
    In this way, you can avoid all possible problems!

4.) With the currently supplied Windows 95 version, it may happen that after 
    having installed miroCRYSTAL VR, Windows 95 starts with an error message 
    (only 16 colors are available). In this case, Windows 95 does not detect
    the S3 ViRGE processor. After having installed the miro software this will
    not happen again.
    
    If it is not possible, however, to select the resolution and number
    of colors, you can use the miro tool kill3d.exe.
    This tool resets your computer to its initial state it was in before 
    the graphics software has been installed. After restarting Windows 
    you can install the graphics board as described above.

    Please only use the kill3d.exe program in exceptional cases. It is no
    substitute for the deinstall program contained in the miroCRYSTAL VR 
    program group.                                       

5.) If you want to update or reinstall the drivers, please remove the old 
    miro software using the deinstaller program mentioned above. 
    To remove all system files, first close the miroPINBOARD.    




LIMITATIONS
===========
In general, dual-screen solutions (Twinface) with this graphics board 
combined with other miro graphics boards or with boards of other manufacturers
are not supported!!!


Video &         Your miro graphics adapter offers very high image refresh 
Multimedia      rates which relieve eye-fatigue during the daily work with
                application software. This can, however, lead to problems when
                playing back AVI or MPEG files. To solve this problem, the miro
                PINBOARD offers you the miroVIDEO button.
                This optimizes the image refresh rates for multimedia
                applications (miroVIDEO DC10/DC30, miroMEDIA PCTV).
                If there are distortions in the overlay image (stripes), use
                this button.
 
Games under     Some games for DirectDraw use screen modes which are not 
DirectDraw      available when the miroVIDEO button is enabled. In case of
                problems, simply disable the video optimization.

640x480         If you cannot switch to the TV mode in this resolution,
                enable TV Underscan using the miroPINBOARD.

miroSCREEN      Do not use this tool with fixed-frequency monitors. You should
ADJUST          not select image sizes and positions which deviate too much 
                from the default settings because otherwise you may damage the
                monitor.
                You cannot use miroSCREEN ADJUST simultaneously with MPEG or TV
                output.
                While miroSCREEN ADJUST is running, please avoid switching the 
                resolution with miroPINBOARD or Windows95.

                Under VGA2TV it is not possible to alter the image size using 
                the miroSCREEN-Adjust tool. You can, however, adapt the image
                position to your TV set. Extreme image positions may lead to
                distortions. 
                Please only use miroSCREEN-Adjust in the TV mode when your 
                image is not centered sufficiently.   

DirectX         A DirectX application may notify you that the used driver has
                not been tested with DirectX. When the program asks you, if you
                want to replace the tested driver by a tested one, please
                answer NO.
                Please check after having installed games under Windows95, 
                if the miro driver is still active after restarting your 
                computer.      
                If not, you may have to reenable or to reinstall the driver. 

Xing! Player    If you want to output an MPEG movie on a TV compatible device, 
                first start MPEG on your computer monitor and then switch to 
                the TV output. Also switch off the hardware acceleration in the
                XING-Setup.
                Please do not use a virtual TV Screen during playback.
                                     
AVI & TV        In case you want to output an AVI movie on TV in the full-
                screen mode, enable VGA2TV under DOS.


Windows NT 4.0  The current Windows NT 4.0 version does not yet support 
                Direct3D. This means that programs, especially games using this
                interface, are not operational under Windows NT 4.0. 
                We recommend to use the Microsoft "Service Release I" for
                NT 4.0.  

VGA2TV          When using VGA2TV (see manual) it may happen that the wrong
                character set will be selected when switching to the DOS
                full-screen mode. 
                Enter "mode co80" to achieve a correct 80x25.



Hints on Windows 3.x
================


You can also use your graphics adapter under Windows 3.x although
under restricted conditions. Please note the following hints.

1.) Because Windows 3.x is not capable to detect a new graphics adapter, 
    change to the Windows directory under DOS and call "Setup". 
    Select "Display" using the arrow up/down keys and select the  
    "Other" option which requires the disk provided by the device drive vendor.
    
2.) Now you can easily install the graphics drivers from the disk or the  
    supplied CD-ROM. If you are using the installation CD, please enter
    the complete driver path, e.g. D:\Disksets\win31\.. . 
    The driver is, however, not called "miroCRYSTAL VR2000/4000"  
    but ViRGE which is the name of the graphics processor.

3.) After this installation all possible resolutions will be displayed.
    These can, however, be changed and adapted anytime. 
    You should change the resolution under DOS.        

4.) Now install "Galileo".
    This tool allows you to change the settings. 



Higher image refresh rates
===========================

IMPORTANT!        Using the "S3refrsh" program requires some caution.
==========        In your own interest, please only select image refresh rates
                  which are compatible with your monitor. Please refer to your
                  monitor manual for the characteristics.  

1.) To achieve higher image refresh rates, use the "S3refsh.exe" program which
    is located in the Windows 3.x directory. Copy this program to the hard
    disk and start it.

2.) A screen which a list of refresh rates on the left-hand side will appear. 
    Above you will find all possible resolutions.
    The mouse or the keyboard lets you select desired image refresh rates. 

3.) After you made all settings, quit the program by clicking the "Exit"
    button. If you want to the settings are saved in the "autoexec.bat" file
    so that they are available after the system startup.

4.) Restart your system. Windows now works with the desired settings.



OS/2 Warp
=========


1.) Start OS/2 in the VGA mode and open the OS/2 window (task bar).

2.) If you want to install from disk, this disk has to be called "S3 DRV1". 
    Switch to drive A:\. Use Setup.cmd, to start the installation. 

3.) Press the "y" key to confirm. Now all system files will be copied.
    Important: The disk must not be write-protected.

4.) Perform a system shutdown and open the "System configuration" folder.
    Here you will find the "Display Driver Install" icon. Double-click this
    icon, to call a dialog you can use to make monitor settings. Select
    "Primary Display". 
    After confirming, a driver list will appear which includes the new driver
    name "S3 Virge [32 Bit] Version 1.00.08". This driver has already been 
    selected.

5.) The following dialog selects the monitor values. Please confirm the choice
    and click "Install". Again, restart the system.

6.) Under System configuration\System the window at the top displays all
    resolutions and the window at the bottom displays all possible image 
    refresh rates.

7.) Another tip: The "Screen" tab has another page you can enable at the bottom
    on the right. Here you can view all data of the selected settings. 
    In addition, a new monitor name has been added: "Custom:Full S3 Chip
    Capabilities".
    This monitor offers the maximum refresh rates you can select in the first 
    page of the screen menu.




OTHER LIMITATIONS
=================

miro Computer Products AG always tries to support a wide range of languages. 
Because other manufacturers do no share this opinion, the "ActiveMovie" and
"DirectX" is only available in English. 
