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            IMPORTANT INFORMATION
                 for
              mach64 Products
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mach64                                                      May 1, 1995
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READ THIS FILE COMPLETELY BEFORE ATTEMPTING TO USE THIS PRODUCT !

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Contents

1.0     Introduction
2.0     Adapter Installation
3.0     Installation Notes for Windows 3.1
3.1     Installation Notes for Windows For WorkGroups 3.11
4.0     Installation Notes for AutoDesk products
5.0     Installation Notes for OS/2
6.0     Installation Notes for Windows NT 3.5
7.0     VESA Support
8.0     VGA Feature Connector
9.0    Reporting Problems


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1.0     Introduction

This file contains last-minute updates that are not found in the User's
Guide or in any addendum accompanying the display adapter.  Please read
this file before proceeding with the installation.

For information on running the INSTALL program please refer to the following
sections in your User's Guide:

- "Configuring the Hardware"
- "Running the INSTALL Program"

GENERAL INFO for NEW INSTALLATIONS:

- In order to match your mach64 to your monitor and to your system
  configuration, you must run "QUICK SETUP" before installing any
  drivers.
- Please follow the instructions in the "Selecting Your Monitor Type"
  section of your User's Guide.
- After running "QUICK SETUP", select "DRIVERS INSTALLATION" and use
  <escape> to exit back to DOS.

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2.0     Adapter Installation

Adapter installation, while greatly simplified through the INSTALL
utility, requires a step by step methodical approach to ensure that the
adapter does not conflict with other system resources and to ensure
optimal performance.

The following technical information is a basic outline of the steps required
to install an mach64 graphics adapter.

1)  Upon removing the mach64 card from the box, record in your User's Guide,
    the serial number (found on the non-component side of the card) and the
    BIOS version (located on a white label on a plug-in BIOS chip on the
    component side of the card).

    The serial number will be helpful if you require ATI Customer Support
    and will also be required to complete the Warranty Form.

2)  The following port addresses are used by the mach64:

    102, 1CE, 1CF, 2EC-2EF, 3?4, 3?5, 3?8, 3?9, 3?A, 3?B, 3DC
    and all aliases; 46E8 (?=B for monochrome, ?=D for color operations)

    Check the system hardware for internal modems, FAX cards or LAN cards
    which may be using addresses at 2E8 or any other I/O address used by the
    mach64.

    Also ensure that LAN cards, scanner cards and other peripheral adapters
    are not using upper memory addresses between C000 and C7FF.

    If you have a system containing an on-board graphics controller, consult
    your owners manual on how to disable it.

    Check and record how much system memory is installed on the system
    motherboard.


3)  After powering down your system, remove your old graphics adapter (or
    disable the on-board graphics controller) and plug-in the mach64.

    If the system fails to produce text on the monitor, return to Step 2
    and re-check the installed hardware for address conflicts.

    If no obvious conflicts are present, carefully remove all non-
    essential peripheral adapters (scanner, FAX/modem, audio, CD ROM cards,
    etc.) to determine the nature of the conflict.

    As a last resort, if possible, see if the card works in a different
    system.


4)  Once the system has properly booted, place Disk #1 of the supplied
    mach64 disks into the appropriate disk drive and run the INSTALL
    program.

    The INSTALL program may report that it has found the graphics card to
    be in a "new or changed configuration".  If this message appears, press
    any key to have the INSTALL program update the mach64 EEPROM.

    Also Install may report a conflict at I/O 2E8.  Refer to part 2 for
    possible conflicts.

    NOTE: THE SCREEN WILL BE BLANKED FOR FEW SECONDS DURING CONFIGURATION
    CHANGE.

    The INSTALL program also checks for potential system conflicts.  The
    "System Information" selection will list the graphics and system
    configuration details.  You can also run this option from command line
    by typing "INSTALL SYSINFO".

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3.0     Installation Notes for Windows 3.1


1) Run INSTALL from Disk #1 of the mach64 diskettes.

2) Select Drivers Installation from the Main Menu.

3) From the Install Enhanced Drivers menu select Microsoft Windows.

4) Select INSTALL Windows 3.1 driver:

    a) Select Display Drivers only
       - if you have NOT installed Windows based multimedia applications
     (e.g. Multimedia CD-ROMS, Video editing packages)

    b) Select Display Drivers + MVA drivers
       - if you have installed Windows based multimedia applications
     (e.g. Multimedia CD-ROMS, Video editing packages)

5) Follow the screen instructions to completion.

6) When INSTALL reports that the driver has been successfully installed,
   exit the INSTALL program using the <escape> key.

7) Start Windows, use the ATI Desktop icon to configure Windows for the
   desired resolution and color depth.

Note:  If you wish to change the Windows' display driver, to a different
       driver (i.e. VGA), do not use the Windows' Setup icon within Windows.
       To change the display, exit Windows and change directory to the
       Windows subdirectory.  When at the Windows prompt type SETUP and
       select the desired display driver.

For further information regarding the mach64 Windows functions please use
MS Write to read the MACH64.WRI file.  This Write file is located in the
mach64\ATIDESK subdirectory (default), if the display driver has been
previously installed.  New installations will find MACH64.WRI located in
the ATI\ATIDESK subdirectory (default).

3.1     Installation Notes for Windows For WorkGroups 3.11

Follow the Microsoft Windows 3.1 installation instructions.

The Super VGA 256 color drivers supplied with Microsoft Windows for
WorkGroups 3.11 will not function correctly on a mach64 based card.
These SVGA drivers appear to check for specific Super VGA adapter chip
sets and incorrectly identifies the mach64 card as a SVGA adapter.

If you wish to use other Windows for WorkGroups supplied graphics drivers,
you may select the VGA or Super VGA (800x600, 16 color) driver.

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4.0     Installation Notes for AutoDesk products

Note:   The following applications are supported:
    AutoCAD R10, R11, R12 and R13(Protected Mode only);
    3D Studio R2 and AutoShade 386 with Renderman.

1) Run INSTALL from Disk #1 of the mach64 diskettes.

2) Select Drivers Installation from the Main Menu.

3) From the Install Enhanced Drivers menu select one of the following:

    AutoCAD
    AutoDesk 3D Studio
    AutoShade

4) Follow the screen instructions to completion.

5) When the INSTALL reports that the driver has been successfully installed,
   hit <escape> to exit the INSTALL program.

6) All the AutoDesk products require environment variables to be loaded
   prior to starting the application.  The INSTALL program creates
   batch files that contain all the necessary SET statements.  These
   batch files will be located in the directory specified during the
   driver installation. The following are the default batch file names:

    AutoCAD R10, R11, R12 and R13    ADIACAD.BAT
    AutoDesk 3D Studio R2            ADI3DS.BAT
    AutoShade with Renderman         ADISHADE.BAT

7) After running the appropriate batch file, refer to your AutoDesk
   documentation for information on how to select and reconfigure the
   display driver.

For further details, please see README.DLD, after installing the drivers.

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5.0     Installation Notes for OS/2

Note:  Before installing the ATI OS/2 display drivers, you must
       set your system to use the VGA driver. Type SETVGA from
       a full screen OS/2 session to accomplish this.

Note:  If PM Desktop does not reappear after exiting from the full screen
       DOS session. Pressing <Enter> brings you back to full screen.
       You must reboot to get back to the PM Desktop.

1) Check The Minimized Window Viewer to see if you have any WIN-OS/2 or
   DOS sessions iconized. Close them all as the INSTALL may not work
   if a WIN-OS/2 session is running.

2) To complete the install successfully you will require the following
   information:

    a) The OS/2 boot drive on which the PM driver is located.
    b) The default ATI OS/2 driver directory is C:\MACH_OS2.

3) Exit the Install program

4) Run DSPINSTL from within an OS/2 window.

5) When the Display Driver Install panel appears, select Primary Display
   and click OK to bring up a list of choices.  You should see an option for
   ATI mach64.

6) Select 'ATI mach64 (Enhanced)' from the list and click OK.

7) When the source directory panel appears, select 'Change' and enter:
   C:\MACH_OS2   (replace c: with your boot drive letter if you don't use c)
   Click 'Set' and then 'Install'. After the files are copied, exit the OS/2
   window or full screen session. Shut down and restart your system.

8) The PM driver will first come up in 640x480, 256 colors mode.  Use the
   following steps to change the screen resolutions or number of colors:

   a. Open 'OS/2 System' icon.
   b. Open 'System Setup' icon.
   c. Open 'System' icon.
   b. Select the 'Screen' tab.
   e. Select the desired resolution and number of colors from the list.
   f. Double click on the system menu icon or select close from the system
      menu to close the window.
   g. Shut down and restart your system.

For further details, please see README.OS2 after installing the driver.

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6.0     Installation Notes for Windows NT 3.5

For installation instructions of Windows NT 3.5 drivers please refer to the
README file on the supplementary NT disk.

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7.0     VESA Support

The VESA modes supported by your mach64 card are dependent upon the amount
of video memory and the monitor type selected in the ADVANCED or QUICK SETUP.
To determine the modes supported by your current configuration you must
install the mach64 utilities, then run VESATEST from the mach64 directory.

1) Run INSTALL and select "Utilities Installation" from the Main Menu.
2) Follow the screen instructions to completion.
3) When INSTALL is finished copying all necessary files, press <escape> to
   exit install.
4) Change directory to the mach64 (default) directory and type "VESATEST".
5) All the modes currently supported will be displayed.

If you experience any problems using applications which support VESA, please
install the mach64 Utilites and consult README.VBE for further information.

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8.0     VGA Feature Connector

The VGA feature connector is provided on mach64 graphics accelerators
for the purpose of passing display information to optional add-in products
such  as TV or video playback (overlay) boards.  However, for VRAM-based
accelerators such as the GRAPHICS PRO TURBO 1600, GRAPHICS PRO TURBO and
WINTURBO, the feature connector only provides display information if the
mach64  is placed in VGA mode.  This means that the user must select a VGA
or SVGA driver prior to running Windows, etc.

VRAM based products use an advanced 64-bit architecture in which the
data path from the VRAM connects directly to the DAC. This high performance
64-bit bus between the VRAM and the DAC provides for a substantially
increase in bandwidth for improved refresh rate support at higher
resolutions and color depths.  Mach64 drivers are written to operate in
accelerator mode and utilize the full capabilities of the dual-ported VRAM
memory.  However, when operating in accelerator mode, the low bandwidth VGA
feature connector does not carry pixel information, and thus, overlay add-in
cards connected to this feature connector will have no display or 'black
windows'.  To use the feature connector with VRAM-based products, a VGA
driver must be used.

If the mach64 is installed in a PCI slot, palette snooping must also be
enabled.   This will ensure that the color palette on both the graphics
and overlay cards are properly initialized.  Refer to your system
documentation for instructions on how to do this (for many PCI motherboards,
the system CMOS provides a user accessible switch to enable palette
snooping).

For DRAM-based mach64 products such as the GRAPHICS XPRESSION and WINBOOST,
the VGA feature connector can be used in both accelerator and VGA modes.
Due to the single-ported DRAM memory, data must return to the graphics chip
and appear on the feature connector, regardless of the mode.  However when
operating in accelerator mode, the mach64 driver must be directed to load
the VGA palette on the overlay card.  This is accomplished by adding
VGADAC=ON to the MACX section of the SYSTEM.INI.
Note that if the mach64 accelerator is installed in a PCI slot, palette
snooping will also have to be enabled as described previously.

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9.0     Reporting Problems

If you experience any difficulties, open the file REPORT.TXT and complete
the Problem Report form.
