[English]
PDREADME.TXT                MATROX GRAPHICS INC.              2000.02.11

                       Matrox PowerDesk for Windows 2000
                             Revision 5.01.023


Contents
========

- Description of this release
- Installation
- More information
- Notes, problems, and limitations


Description of this release
===========================

Matrox PowerDesk software includes a display driver and display utilities.
With this software, you can take full advantage of your Matrox graphics
hardware and you can access additional Matrox display-related features.


Installation
============

To install Matrox PowerDesk, start the "setup" program included with it,
then follow the on-screen instructions.

The setup program will only install software if a Matrox graphics card model
supported by the setup program is installed in your computer.


More information
================

For more information on Matrox PowerDesk, see the help file included with it.
For information specific to your Matrox graphics card, see your Matrox or
system manual.


Notes, problems, and limitations
================================

- DirectDraw, Direct3D and DirectVideo support

  The DirectDraw driver we provide is compatible with DirectX 2 (and
  later) and includes Direct3D support. For our DirectDraw/Direct3D
  driver to be called, and benefit from hardware acceleration,
  Microsoft DirectX 2 (or later) MUST be installed, even for programs
  originally made for DirectX 1.

  Also, if a recent version of DirectX isn't installed, some Matrox
  PowerDesk features may not be available.

  We provide DirectX on the Matrox CD-ROM. The latest DirectX is
  available from the Microsoft Web site, and is included with many
  DirectX programs.

  IMPORTANT: If the DirectX setup program prompts you to replace the
  existing display drivers, click "No". Otherwise, the setup program
  installs display drivers which are not as optimized as the Matrox
  drivers and which do not support PowerDesk software.

  Note that depending on the origin of your Microsoft DirectX software,
  it may not include DirectVideo support. For faster playback of Indeo
  and Cinepak AVI files, you should install Microsoft DirectVideo
  support.

- Matrox bus mastering

  This driver supports bus mastering. Bus mastering is a feature that
  allows expansion cards to perform tasks at the same time as your
  computer's CPU. If you have a fast Pentium computer (faster than
  166 MHz), the display performance of most programs is improved when
  bus mastering is used.

  To use bus mastering with 3D (DirectX) programs, your graphics card
  needs an interrupt request (IRQ). Most computers automatically assign
  an IRQ to graphics cards, but some do not. If your graphics card hasn't
  been assigned an IRQ, programs that use Matrox bus mastering may not
  work properly. For more information, see your Matrox or system manual.

- DirectDraw and Automatic Power Management

  As stated in "Microsoft DirectX Release Notes", September 30, 1995, a
  DirectDraw game may be unable to restore properly if it is suspended
  by Automatic Power Management utilities.

- Installation in different language versions of Windows

  If you install software in a language different from the language of
  your operating system (for example, English software on a Japanese
  system), you may have problems with text and dialog box controls being
  cut off. This is because of differences in system fonts.

- OpenGL support

  Note the following limitations related to the OpenGL driver included with
  Matrox PowerDesk:

    - OpenGL support may not be included in some versions of Matrox PowerDesk.
      For a version of Matrox PowerDesk with OpenGL support enabled, see
      the Matrox Web site (www.matrox.com/mga).

    - Regardless of your graphics card or display driver, Windows 98 only
      supports OpenGL acceleration with the primary display of your computer.
      (The "primary display" is the one that first displays information when
      you restart your computer.)

    - With the "Tribes" game, you may notice some minor display artifacts and
      the opening video introduction may not display properly.

    - Using 3D Studio Max 2.0, you may experience problems with the viewports
      being improperly redrawn. If this happens, simply click in a viewport
      to properly update their display. (This problem isn't present with
      version 2.5 or 3.0 of 3D Studio Max.)

- DualHead Multi-Display mode under Windows 2000

  If you have a DualHead-supporting graphics card and you apply "DualHead
  Multi-Display" mode under Windows 2000, Matrox PowerDesk automatically
  clears the Windows check box called "Hide modes that this monitor cannot
  display". (This check box is in the advanced settings of the "Display
  Properties" dialog box.)

  Under Windows 2000, please don't enable this check box while using
  DualHead Multi-Display mode -- doing so may cause problems. When DualHead
  Multi-Display mode is disabled, this option will be automatically restored
  to its previous setting. For more information on DualHead Multi-Display
  mode, see context-sensitive help.

- 15-bit color palette support for Windows 2000

  For advanced users: By default, the 15-bit color palette is unavailable
  for Windows 2000. If you need to use this color palette, you can make it
  available by adding the "User.Enable15Bpp" value to your Windows registry
  and then setting this value to "1". If you're adding this value, add it
  under "HKEY_LOCAL_MACHINE" -> "SYSTEM" -> "CurrentControlSet" -> "Services"
  -> "mgau" or "g200" or "g400" -> "Device0". The value type is "REG_DWORD".

- "Monitor Settings" property sheet

  The current Matrox display driver for Windows 2000 doesn't include the
  "Monitor Settings" property sheet. (This property sheet is included with
  the Matrox display driver for Windows 95/98.) This property sheet will be
  included with a future Matrox display driver for Windows 2000. Matrox
  software updates are available on the Web (www.matrox.com/mga).

