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

Quantum3D Obsidian Family
Release 3
12 February 1998

Copyright 1997-1998  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 supports the Obsidian Graphics Card Family which 
includes the Obsidian 50 Series, Obsidian 50 Series with TV output, 
the Obsidian 100DB, the Obsidian 100SB and the Obsidian 100SB with 
MGV.  This release contains drivers derived from 3Dfx Voodoo Graphics
Glide 2.43 and Voodoo Graphics Direct3D 2.14.

CONTENTS
========
   I.  Minimum System Requirements
  II.  Base Drivers Feature Notes
 III.  Before You Begin
  IV.  Driver Installation for the Obsidian
   V.  Software Utilities
  VI.  Removing the Obsidian Drivers
 VII.  Frequently Asked Questions


I. Minimum System Requirements
==============================
- PCI 2.1 compliant system
- Pentium(R) class or faster processor
- 16MB of system memory
- Available PCI expansion slot (2 adjacent PCI expansion slots 
  required for the Obsidian dual board 100DB-4440.  Full length PCI
  slot required for Obsidian 100SB - ATX form factor recommended).
- Windows 95 (or later)
- Windows NT 4.0 Service Pack 3 (or later)
- DirectX 5.0 (or later)(Windows 95 only)
- Windows desktop (VGA) display adapter or Quantum3D MGV companion 
  VGA daughtercard (Obsidian 100SB only)
- VGA compatible monitor

II. Base Driver Feature Notes
==============================
The Quantum3D Obsidian drivers included with this release are based
on Glide 2.43 and Direct3D 2.14 drivers and implement Base Drivers 
Features, whose features for the Obsidian are:

- Multiple Obsidian adapters can now be used in a single computer.
- Using the Obsidian in a computer with an S3 968 or 868 based 
  Windows display adapter may cause the computer to not operate 
  correctly.
- Gamma correction on the Obsidian 100SB now functions at 800x600.
- 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 Obsidian 50 Series can operate at these video timings:
        Resolution  Refresh Rate
        512 x 384   72,75,85,120 Hz
        640 x 400   70,75,85,120 Hz
        640 x 480   60,75,85,120 Hz
        800 x 600   60,75,85 Hz
- The Obsidian 100DB-4440 can operate at these video timings:
        Resolution  Refresh Rate
        512 x 384   72 Hz
        640 x 400   70 Hz
        640 x 480   60 Hz
        800 x 600   60 Hz
- The Obsidian 100SB can operate at these video timings:
        Resolution  Refresh Rate
        512 x 384   72,75,85 Hz
        640 x 400   70,75,85 Hz
        640 x 480   60,75,85 Hz
        800 x 600   60,75 Hz
- Obsidians with TV Output capabilities operate only when Voodoo 
  Graphics is running and at these video timings:
        Resolution  Refresh Rate    Format  Scan Option
        640 x 480       60 Hz       NTSC    Overscan and Underscan
        640 x 480       50 Hz       PAL     Overscan and Underscan
        800 x 600       60 Hz       NTSC    Underscan
        800 x 600       50 Hz       PAL     Overscan and Underscan


III. Before You Begin
=====================
Whether you are installing the Obsidian for the first time or 
upgrading existing drivers for the Obsidian, follow the procedure
below before you begin the driver installation.
 1. From the Start menu select Settings then Control Panel.
 2. Double-click on Add/Remove Programs, and select the 
    Install/Uninstall tab.
 3. Scroll through the list and select any existing drivers for 3Dfx
    Voodoo Graphics based products, including ones from Quantum3D.
 4. Click on the Add/Remove button.
 5. Run RunMeFirst.bat from the Obsidian Family Driver CD-ROM to 
    verify that you are running Windows NT 4 Service Pack 3 or later.
 6. If this a first time installation, remove any other 3Dfx Voodoo
    Graphics adapters from the system if present.  Follow the 
    hardware installation procedure in the Obsidian Family User's
    Guide for your appropriate Obsidian adapter. 


IV. Driver Installation for the Obsidian
========================================
 1. Power on the computer and boot Windows NT 4.  Be sure to log onto
    the computer with an account that has local Administrator
    privileges (this is required for updating the registry).
 2. Insert the Obsidian Graphics Card Family CD-ROM into the CD-ROM
    drive.
 3. From the Start menu, select Programs and then Windows NT
    Explorer.
 4. Click on the CD-ROM drive in the All Folders panel.
 5. Double click on the WINNT directory in the Contents panel.
 6. Right mouse click on OBSIDIAN.INF in the Contents panel and
    select Install.
 7. Windows NT will copy the drivers from the CD-ROM for the
    Obsidian to the hard drive.
 8. Reboot the computer when prompted.


 V. Software Utilities
======================
During the Obsidian driver installation, a number of diagnostic 
utilities are installed under the following folders:
    C:\Program Files\Q3D\Obsidian\Win95  
    - or -  
    C:\Program Files\Q3D\Obsidian\WinNT
depending on the operating system you are using. This section 
describes the software utilities for the Obsidian.

NOTE: Some software utilities must be run from the MS-DOS prompt. 
From the Start menu select Programs then MS-DOS Prompt. 
In the MS-DOS Prompt window type:
    cd "\program files\q3d\obsidian\win95"
for Windows 95 or
    cd\program files\q3d\obsidian\winNT
for Windows NT and press Enter. 
You may now run the desired software utility from the MD-DOS Prompt 
window by typing the appropriate file name.

The following is a list of utilities that must be run from the 
MS-DOS Prompt.

DETECT.EXE
MOJO.EXE
GWHAT.EXE
PASS.EXE
PCIRW.EXE

The following utilities can be run from Windows.

GDETECT.EXE
GMOJO.EXE


VI. Removing the Obsidian Drivers
=================================
 1. From the Start menu select Settings then Control Panel.
 2. Double-click on Add/Remove Programs, and select the 
    Install/Uninstall tab.
 3. Scroll through the list and select the Quantum3D Obsidian 
    adapter listed.
 4. Click on the Add/Remove button.
 5. Shutdown the computer and remove the Obsidian adapter from the 
    computer.
 6. When Windows NT is restarted, the last portion of the removal is
    done automatically.


VII. 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 manually will take precedence over configuration 
   options.  Therefore, if you have set environment variables 
   manually, the corresponding configuration option will not be 
   available.  Removing these environment variables and restarting 
   the computer will restore the previously unavailable configuration
   options.
---------------------------------------------------------------------
Q: When TV output is enabled, why are the options for resolution 
   restricted to 640 x 480 or 800 x 600 at 60 HZ refresh rate for 
   NTSC and 50 Hz refresh rate for PAL TV output?

A: Enabling TV output restricts the resolution and refresh rate 
   options 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 tearing of
   images in the application. 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 Explorer, why does a window flash
   and nothing appear to happen?

A: Some of the software utilities must be run from the MS-DOS prompt.
   From the Start menu select Programs then MS-DOS Prompt. The 
   following is a list of utilities that must be run from the MS-DOS 
   prompt:
            DETECT.EXE
            MOJO.EXE
            GWHAT.EXE
            PASS.EXE
            PCIRW.EXE   
---------------------------------------------------------------------
Q: When attempting to run an older Glide base application, why does 
   an error message "missing DLL file 'GLIDE.DLL' not found" appear?

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: When using a TV monitor, why is the display corrupted?

A: Occasionally the output to the TV monitor may display incorrectly.
   Simply exit the application and restart it.
---------------------------------------------------------------------
Q: When attempting to run an application, why does an error message 
   "Expected VXD version V1.2 got V1.1" appears?

A: The drivers for the Obsidian may have been overwritten, are the
   incorrect version or have been corrupted. Run RunMeFirst.bat,
   restart the system and reinstall the Obsidian drivers.
---------------------------------------------------------------------
Q: Can the Obsidian 50 Series be overclocked?

A: The Obsidian 50 Series is designed for reliable performance at 
   50MHz memory clock speed.  The Obsidian tab in the Display
   Properties dialog does allow for modifying the memory clock 
   speed, however modifying this setting from the default 50MHZ may
   impact reliable performance.
---------------------------------------------------------------------
Q: Can the Obsidian dual board 100DB or Obsidian 100SB be 
   overclocked?

A: The Obsidian dual board 100DB-4440 and Obsidian 100SB are designed
   only to operate at 50MHz clock speed and can not be overclocked.