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                        IMPORTANT INFORMATION
                                 for
                     ATI Graphics Pro Turbo Users
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ATI  Windows NT Device Drivers Version 1.33              April 15, 1994
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READ THIS FILE COMPLETELY BEFORE ATTEMPTING TO USE THIS PRODUCT !

ATI Technologies Inc.
33 Commerce Valley Drive East
Thornhill, Ontario
Canada L3T 7N6

Head Office, Sales and Marketing ....... (905) 882-2600
Corporate FAX .......................... (905) 882-2620

Customer Support (VOICE)................ (905) 882-2626
Customer Support FAX ................... (905) 882-0546

ATI DOWNLOAD BBS ....................... (905) 764-9404
                14400 bps, 9600 bps, 2400 bps, 1200 bps
                        (8 Data, 1 Stop Bit, No parity)
CompuServe ............................. GO ATITECH
      General Inquiries                  76004,3656
      Technical Support Inquiries        74740,667

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Contents

1.0     Introduction
  1.1     Supported Resolutions
2.0     Installation Notes for Windows NT
  2.1     Uninstalling the Windows NT drivers
3.0     Known Problems
4.0     Reporting Problems


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1.0     Introduction

This ATI driver runs on the following products:

     GRAPHICS PRO TURBO (2MB, 4MB)

The Graphics device drivers supplied here are for the Microsoft Retail
Release of the Windows NT operating system.

Any questions or problem reports should be addressed to ATI Driver
Development via the ATI forum on Compuserve.

The drivers will substitute 640x480 by 256 colors if the mode selected is
NOT supported by the ATI graphics hardware.

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1.1     Supported Resolutions.

                    256 colors    65000 colors    16.7 million   TRUE color
     Resolutions    8 bpp         16 bpp          24 bpp         32bpp *

     640 x  480     2/4MB         2/4MB           2/4MB          2/4MB
     800 x  600     2/4MB         2/4MB           4MB            2/4MB
    1024 x  768     2/4MB         2/4MB           4MB            4MB
    1280 x 1024     2/4MB         4MB             4MB            N/A

2/4MB  -  Supported on 2 or 4 Megabyte mach64 products
4MB    -  ONLY supported on 4 Megabyte mach64 products
N/A    -  Not Supported

* Note:   TRUE color, provides 16.7 million colors using a 32 bpp data
          format.  TRUE color provides higher performance but uses more
          graphic memory.

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2.0     Installation Notes for Windows NT

This ATI driver package containing:

  - ATI.SYS        (ATI Graphics miniport driver)
  - ATI.DLL        (ATI Graphics display  driver)
  - OEMSETUP.INF   (setup files used by Windows NT Setup program)
  - TXTSETUP.OEM
  - ATI_VID
  - This README file

Windows NT drivers are included on Disk #3 of this package.  They are
located in the \NT sub-directory.

Procedure:

1. Run the Windows NT Setup program located in the Program Manager, Main
   group.

2. Select Change System settings, from the Options pulldown menu.

3. Select Other, from the display options.

4. NT will prompt you for the correct path, enter A:\NT, where A: is
   the drive containing ATI Graphics Pro Turbo Disk #3.

5. A list of all ATI Graphics Accelerator drivers will appears, select
   the resolution and color depth desired.

6. Restart Windows NT.  Windows NT will start up using the ATI drivers.

Note: If you select a color depth or resolution, not supported by your
      card, NT will substitute 640x480, 256 color for the display.


2.1     Uninstalling the Windows NT drivers

How to uninstall the ATI Windows Device Driver.  There are TWO ways to do
this without re-installing Windows NT.

ONE method is:
    CD \winnt\system32\drivers
    ren ATI.sys  ATI.ati
    Windows NT looks for ATI.SYS drivers at boot time, if it cannot find
    it, it cannot use it.

SECOND method is:
    While running Windows NT, execute the Win NT Setup program.
    Select a NON ATI driver  (try VGA compatible)

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3.0     Known Problems

Some applications do not handle 24bpp and 32bpp properly resulting in the
colors not looking right.

What to do if "ATI ACCELERATOR not found" message appears:

Is there another adapter card in the system that CONFLICTS with I/O
locations in the 350-35F hex range?  Relocate the I/O to 300 to 31F range.

Attempting to run the ATI Graphics Pro Turbo Install program under NT will
report "Mach64 Adapter not detected.".  The install program must be run
from DOS.

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4.0     Reporting Problems

TECHNICAL SUPPORT

If you experience any problems, please report them to ATI Customer Support
by fax (using the attached form) or by CompuServe.

Make multiple photocopies of the form and use a separate form for each
problem being reported. Please mail or fax your completed forms to us
as soon as possible.

PROBLEM REPORT FORM

Please complete this form and return it to ATI Technologies Inc. at the
address or fax number listed below, or return via CompuServe. Make multiple
copies of this form.

Please type "INSTALL SYSINFO" in the mach64 directory. Attach a copy of the
System Information output to all problem reports submitted. Use a separate
form for each problem being reported.

ATI Technologies Inc.
33 Commerce Valley Drive East
Thornhill, Ontario
CANADA. L3T 7N6

FAX:  (905) 882-0546

Product Name:  GRAPHICS PRO TURBO
Bios P/N #:
Customer Name:
CompuServe Address:
Fax Number:
Address:

My Hardware is Configured as follows:
CPU/Speed:
Memory:
Video Capture Adapter (Make and Model):
Audio Adapter (Make and Model):
CD-ROM Drive (Make and Model):
Software:


Other system/software Information:


Problem description:

