                             =============
                             Release Notes
                             =============

Obsidian(tm) 100SB Windows 95 OSR 2 Driver Disk
Release 2
BID 016C  24-Dec-97 12:00

Copyright 1997 Quantum3D, Inc.
All Rights Reserved

=====================================================================
Quantum3D, Inc.
2520 Mission College Blvd, Suite 202
Santa Clara, California, 95054-1215
Voice: 408/919-9999   Fax: 408/919-9980
Web Site: http://www.quantum3d.com
Technical Support: support@quantum3d.com
=====================================================================

This release contains drivers derived from 3Dfx Voodoo Graphics
Glide 2.43 and Voodoo Graphics Direct3D 2.14.  It also contains
Release 1 of Quantum3D Display Property Sheet 1.  It supports
multiple Obsidian 100SB adapters in the same computer, but the
property sheet does not allow them to be individually configured.


Minimum System Requirements
---------------------------
- PCI 2.1 compliant system
- Pentium(R) class or faster processor
- 16MB of system memory
- Available full length PCI expansion slot
  (ATX form factor recommended)
- Windows 95 OSR 2 (or later)
- DirectX 5.0 (or later)
- Quantum3D MGV 2000 daughter card or
  separate Windows desktop (VGA) display adapter
- VGA compatible monitor


Installation
------------
 1. Remove any existing drivers for 3Dfx Voodoo Graphics based
    products, including ones from Quantum3D, using Add/Remove
    Programs from the Control Panel.
 2. Run RunMeFirst.bat from this diskette to remove any existing INF
    files and registry keys for 3Dfx Voodoo Graphics based products.
    It will also check that you are running Windows 95 OSR 2 or later
    and that you have installed DirectX 5 or later.
 3. Shutdown the computer.  If it contains another 3Dfx Voodoo
    Graphics adapter, remove it.
 4. Insert the Obsidian 100SB in a free PCI slot and connect up the
    monitor and pass-through cables.
 5. Power on the computer and boot Windows 95 OSR 2.
 6. Windows will detect a new PCI Multimedia Video Device and display
    the Update Device Driver Wizard.
 7. Insert this diskette in drive A and press the Next button.
 8. The wizard should find updated drivers for Quantum3D
    Obsidian 100SB on the diskette.  Press the Finish button.  Be
    careful not to "click-ahead" before the Finish button appears.
 9. You may then be prompted to insert the 'Obsidian(tm) 100SB
    Windows 95 OSR 2 Driver Disk' -- if you are, press OK button.
    The "Copying Files ..." dialog will then complain that it can't
    find a file.  Enter A:\ in the Copy files from" field and press
    the OK button.
10. Windows will copy the drivers from the diskette.
11. DO NOT reboot the computer when prompted.
12. Windows will detect another new PCI Multimedia Video Device,
    recognize that it is a Quantum3D Obsidian 100SB, and install the
    drivers for it.
13. Reboot the computer when prompted.


Updating Drivers
----------------
 1. Run RunMeFirst.bat from this diskette to remove any existing INF
    files and registry keys for 3Dfx Voodoo Graphics based products.
    It will also check that you are running Windows 95 OSR 2 or later
    and that you have installed DirectX 5 or later.
 2. Reboot the computer into Windows 95 OSR 2.
 3. Windows will detect a new PCI Multimedia Video Device and display
    the Update Device Driver Wizard.
 4. Insert this diskette in drive A and press the Next button.
 5. The wizard should find updated drivers for Quantum3D
    Obsidian 100SB on the diskette.  Press the Finish button.  Be
    careful not to "click-ahead" before the Finish button appears.
 6. You may then be prompted to insert the 'Obsidian(tm) 100SB
    Windows 95 OSR 2 Driver Disk' -- if you are, press OK button.
    The "Copying Files ..." dialog will then complain that it can't
    find a file.  Enter A:\ in the Copy files from" field and press
    the OK button.
 7. Windows will copy the drivers from the diskette.
 8. DO NOT reboot the computer when prompted.
 9. Windows will detect another new PCI Multimedia Video Device,
    recognize that it is a Quantum3D Obsidian 100SB, and install the
    drivers for it.
10. Reboot the computer when prompted.


Removal
-------
 1. Bring up Control Panel, double-click on Add/Remove Programs, and
    select the Install/Uninstall tab.
 2. Scroll through the list and select "Quantum3D Obsidian 100SB
    Drivers".
 3. Press the Add/Remove button.
 4. Shutdown the computer and remove the Obsidian 100SB.
 5. When Windows is restarted, the last portion of the removal is
    done automatically.


Notes
-----
- The drivers are designed to function only with an Obsidian 100SB.
  They will not work with with any other Voodoo Graphics based
  adapter, including the Obsidian 100DB.

- When running RunMeFirst.bat you will receive a warning message if
  the version of Windows 95 installed is not OSR 2 or later.  Windows
  95 OSR 2 is a minimum system requirement for the Obsidian 100SB.
  You may proceed with the installation of the Obsidian 100SB,
  however operation may not be reliable.  You may increase the
  chance of the Obsidian 100SB operating reliably by verifying
  that you have the latest system BIOS for your motherboard from the
  motherboard manuafacturer.  Also, make sure that Windows is using
  the PCI bus defaults.  To do this:
    1. Double click on the System icon of Control Panel.
    2. Select the Device Manager tab.
    3. Double click on "System devices".
    4. Double click on "PCI bus".  The PCI bus Properties dialog will
       appear.
    5. Select the Settings tab.
    6. Click the "Set Defaults" button.
    7. Click the OK button and restart if necessary.

- On some computers, you may notice in the "Conflicting device list"
  on the Resources tab of the Device Manager property sheet for the
  Obsidian 100SB a message of the form:
        Memory Range: xx000000-xxFFFFFF used by:
          PCI standard PCI-to-PCI bridge
  and a complementary message on the property sheet for the
  PCI Standard PCI-to-PCI Bridge device:
        Memory Range: xx000000-xxFFFFFF used by:
          Quantum3D Obsidian 100SB
  These messages are benign and can be ignored.

- Although multiple Obsidian 100SBs are supported in a single
  computer,
  XXX multiple Obsidian 50 Series and Obsidian 100DBs are not
  supported
  in the same system as Obsidian 100SBs.

- All environment variables and WIN.INI settings that control
  behavior of the drivers are commented out by the driver
  installation.

- If you have installed the Obsidian 100SB and now want to remove it
  and replace it with another Voodoo Graphics based adapter
  (including another model of the Obsidian family), you must remove
  the Obsidian 100SB drivers using Add/Remove Programs from Control
  Panel before installing the other adapter.


Base Drivers Feature Set 1 Notes
--------------------------------
The Glide 2.43.1 and Direct3D 2.14.1 drivers included in this release
implement Base Drivers Feature Set 1, whose features for the
Obsidian 100SB are:

- Obsidian 100SBs and Obsidian 50/100DBs can not be mixed in the same
  machine.
- Multiple Obsidian 100s (of the same type) can now be used in a
  single computer.
- The Obsidian 100SB must be initialized by software before it is FCC
  Class B and CE Mark compliant.  A service is run at Windows boot
  time that does this.
- Gamma correction on the Obsidian 100SB now functions at 800x600.
- The reliability of the Obsidian 100s have been vastly improved.
- The Obsidian 100SB can operate at these video timings:
        Resolution  Refresh Rate
        512 x 384   72,75,85
        640 x 400   70,75,85
        640 x 480   60,75,85
        800 x 600   60,75
- TV Out operates only when Voodoo Graphics is running and at these
  video timings:
        Resolution  Refresh Rate    Format  Scan Option
        640 x 480       60          NTSC    Overscan and Underscan
        640 x 480       50          PAL     Overscan and Underscan
        800 x 600       60          NTSC    Underscan
        800 x 600       50          PAL     Overscan and Underscan
- The default gamma for Direct3D is now the same as that for Glide
  (1.7).
- Gamma correction and refresh rates can now be set via the Obsidian
  tab on the Display Property Sheet.
- The SST_GAMMA, SST_RGAMMA, SST_GGAMMA, and SST_BGAMMA environment
  variables now control the gamma correction used by the Direct3D
  driver as well as overriding that set by Glide applications.
- The Direct3D driver no longer uses the settings under the registry
  key:
    HKEY_LOCAL_MACHINE\Software\3Dfx Interactive\Voodoo Graphics .


Frequently Asked Questions
--------------------------
Q: Why is the Override Application Setting option in the Obsidian
   tab of the Display Properties dialog checked and not available
   (grayed out)?

A: In order to maintain backward compatibility, environment
   variables set in C:\AUTOEXEC.BAT will take precedence over
   configuration options in the Obsidian tab of the Display
   Properties dialog.  Therefore, if you have set environment
   variables in the C:\AUTOEXEC.BAT file, the corresponding
   configuration option in Obsidian tab of the Display Properties
   dialog will not be available.  Removing these environment
   variables and restarting the computer will restore the previously
   unavailable configuration options.
---------------------------------------------------------------------
Q: When TV output is enable the options for refresh rates for Glide
   and Direct3D are restricted to either 60 HZ for NTSC or 50 Hz for
   PAL Tv output.

A: Enabling TV output restricts the refresh rate for the Obsidian
   100SB to 60 Hz for NTSC and 50 Hz for PAL TV output in order to
   display the image correctly on the TV monitor.
---------------------------------------------------------------------
Q: Why do some applications have corrupted display when the Wait for
   Vertical Retrace option in the Obsidian tab of the Display
   Properties dialog is not checked?

A: Disabling Wait for Vertical Retrace may increase the performance
   of some applications because the hardware is not waiting for Vysnc
   to the display monitor however this may cause the tearing of
   images with the applications. For benchmarking purposes it is
   recommended that you disable Wait for Vertical Retrace for
   maximum performance.
---------------------------------------------------------------------
Q: When attempting to run one of the Obsidian utilities by double
   clicking on the file in Windows Explore, a windows flashes and
   nothing appears to happen.

A: You must run the software utilities from the MS-DOS prompt.
   From the Start menu select Programs then MS-DOS Prompt.
---------------------------------------------------------------------
Q: When attempting to run an older Glide base application, an error
   message "missing DLL file 'GLIDE.DLL' not found" appears.

A: The application is attempting to specifically access an older
   version of a Glide file GLIDE.DLL which has been replaced by the
   current GLIDE2X.DLL file. Contact the manufacturer for an updated
   version of the application.
---------------------------------------------------------------------
Q: Why is the display corrupted to the TV monitor?

A: Occasionally the output to the TV monitor may display incorrectly.
   Simply exit the application and restart it.
---------------------------------------------------------------------
Q: Can the Obsidian 100SB be overclocked?

A: Quantum3D doesn't endorse or support overclocking the Obsidian
   100SB. The Obsidian 100SB is designed operate at 50MHz clock
   speed.
---------------------------------------------------------------------
Q: Why is the Obsidian 100SB listed twice in the Device Manager tab
   of the System Properties dialog?

A: The Obsidian 100SB is a single slot solution that contains two PCI
   devices connected to the PCI bus via a PCI bridge chip.  The
   listings represent each device incorporated in the Obsidian 100SB.
---------------------------------------------------------------------
Q: When attempting to run an application, an error message "Expected
   VXD version V1.2 got V1.1" appears.

A: The drivers for the Obsidian 100SB have been overwritten or are
   the incorrect version or have been corrupted. Run RunMeFirst.bat,
   restart the system and reinstall the Obsidian 100SB drivers.
---------------------------------------------------------------------
Q: On the Obsidian tab of the Display Properties dialog, the
   individual RGB ("Red", "Green" and "Blue") values configured are
   changed when the RGB option is selected.

A: When RGB is selected, highest value configured for red, green or
   blue will be shown by the slider.  However, changes in the
   setting are applied separately to the value of each component.
---------------------------------------------------------------------
Q: A Direct3D application does not operate properly, locks up the
   system or has corrupted display.

A: Some Direct3D applications were not written to operate correctly
   with SLI mode enabled.  For these applications you may need to
   disable SLI mode.  In addition to halfing the texture fill rate,
   disabling SLI mode reduces the effective frame buffer memory size
   to 2MB.  This limitation only applies to Direct3D and does not
   effect Glide applications.  Therefore, if you click on the Adapter
   Info button with SLI mode disabled, 4MB will still be listed for
   the frame buffer memory.  In addition, when you disable SLI mode
   and select 800 x 600 resolution in the Resolution option, the
   Direct3D Test button will not be available.  The Direct3D Test
   applet performs Z-buffering and requires 4MB of frame buffer
   memory (or SLI mode enabled) to operate at 800 x 600 resolution.


Known Issues
------------
These will be fixed in a future release:
- As mentioned above, the drivers are designed only function with an
  Obsidian 100SB.  When used with any other Voodoo Graphics based
  adapter, they cause the computer to hang.  The failure is
  intentional; however, it should be more graceful.
- The Glide test applet currently only displays a static image unlike
  the Direct3D applet which has a spinning 3D model of the Quantum3D
  logo.
- If you Alt-Tab to the desktop with the Direct3D test applet active
  and minimized and run another Direct3D application, an error will
  occur.
- If you Alt-Tab to the desktop with a Glide or Direct3D application
  active and have enabled TV Out, the output to the TV is not shut
  off.



