README.TXT Driver File Contents (

       ALi AGP Driver Version 1.80 WinXP
This file contains a variety of information you should read before 
installing ALi AGP drivers. This setup program contains one driver, 
ALiAGP.sys for Windows XP. ALiAGP.sys is the PCI miniport driver 
providing PCI miniport services for Windows XP.

This document contains the following sections:
1. System Requirements
2. Installation Instructions
3. Uninstallation Instructions
4. Manual Installation
5. Verifying Installation of the Driver
6. Verifying Validation of the AGP Functionality
7. Identifying the Drivers Version Number
8. Change List
9. Known issues

1. System requirements
Windows XP:
  1. Microsoft Windows XP.
  2. ALi AGP Driver (ALiAGP.SYS)
  3. AGP VGA Card with Driver

2. Installation Instructions
Windows XP:
  1. Install Windows XP. 
  2. Press "F8" at Windows XP booting menu to select
     Safe Mode if Windows XP fails to boot into.
  3. Install ALi AGP Driver
   - run this install program.
   - this program will detect the Windows version automatically
     and modify the registry to load the proper driver.
  4. Install VGA driver.

Important note:
Many systems instability are caused by OS drivers internal confliction after
changing mainboard, graphics card, or even upgrading driver or BIOS. It
strongly recommends user to format your hard drive and re-install OS again
after you have ever done system/driver upgrading operation and system is not

3. Uninstallation Instructions
All OSes:
  1. Open "Control Panel" folder
  2. Invoke "Add/Remove Programs" icon
  3. Choose "ALi AGP Driver" item 
  4. Click on "Add/Remove" button to remove drivers.

4. Manual Installation
Windows XP:
  1. Extract AGP driver into a temporary directory. 
  2. Find "System devices" category in "System"'s "Device Manager" tab of
     "Control Panel".
  3. Find ""ALi M1541 PCI to AGP Controller", "ALi PCI to AGP Controller",
     or "PCI standard PCI-to-PCI bridge" device, depend on the ALi chipset you
     use and whether older AGP driver has been installed or not.
  4. Click on the "Properties" button, select "Driver" tab, and click on the
     "Driver Update" button. Choose to install driver by providing driver
     location manually, and give dialog box the address of right OS subfolder
     under AGP driver temporary directory. System will find the driver to
  5. Reboot system to make new installed driver work.

5. Verifying Installation of the Driver
Windows XP
  Find "System devices" category in "System"'s "Device Manager" tab of "Control Panel".
  You can find "ALi M1541 PCI to AGP Controller" or "ALi PCI to AGP Controller"
  device, depend on the ALi chipset you use. Click on the "Properties" button, select
  "Driver" tab, and click on the "Driver Details" button, you can find the driver
  provider and driver file version.
For users who have installed DirectX 8.0 or later:
  Execute Dxdiag from Run command of Start menu. Click on Display tab. Check AGP Texture
  Acceleration is enabled or not under Display Features. Note that sometimes AGP Texture
  Acceleration not enabled doesn't mean ALI AGP driver is not properly installed.

6. Verifying Validation of the AGP Functionality
  To check whether the AGP mechanism is able to activate, we can try the 
  following steps:
    1. Install DirectX 8.0 (Windows XP doesn't need that).
    2. Type "Dxdiag" to execute Dxdiag.exe from "Run" program of Start Menu.
    3. Click the "Display" tab.
    4. Check "AGP Texture Acceleration" of DirectX features is enabled or not.  
7. Identifying the Drivers Version Number
Windows XP
  See Windows XP at Section 5.

8. Change List
  1. Improve 1.73 S4 resume functionality under Windows 2000.
  2. Improve system stability for Ati Rage128 series.
  3. Improve system stability for PCI TV card. 
  4. Add registry key to make Windows 95/98/ME/2000 driver communicates with
     ALi AGP utility. 
  5. Add support for Windows XP.
  1. Add registry key to make Windows 2000 driver communicates with ALi
     AGP utility.       
  1. Support Cyrix III Processor.

  1. Improve system stability for Matrox G400 DH in Windows 2000.

  1. Add Windows 2000 AGP driver.

  1. Correct frame buffer starting address to improve system stability 
     with some 1541 mainboards.
  2. Improve 3D stability for Matrox Millennium II.
  3. Improve system stability in PCI mode.
  4. Enable K6-2/K6-3 Write-Allocate with TNT/TNT2/Geforce/G400 cards.
  5. Improve system stability with Permedia3 cards.
  6. Improve DVD playback issue on M1541 and ATI Rage 128.
  7. Improve system stability with AGP cards without Side Band Address 
     on M1621.

  1. Add AMD K6 Write-Allocate feature

  1. Add support for Matrox G400.
  2. Add support for 3DLabs Permedia3.
  3. Fix some texture corruption syndrome seen on M1541 and TNT2 Model 64 based system.
  4. Fix M1541 system instability after resuming from suspend in Windows 98SE ACPI mode.
  5. Improve system stability with some TNT2 cards.
  6. Improve system stability with some Savage4 cards.

  1. Fix nVidia TNT playing DVD frame drop.
  2. Fix Window 95 system auto resets when using a PCI card and driver v1.53.

  1. Add support for ATI Rage Mobility AGP/Rage Pro XL AGP/Rage Pro XC AGP.
  2. Add support for nVidia TNT2/Vanta.
  3. Add support for 3Dfx Voodoo3.
  4. Fix 3Dfx Banshee/Voodoo3 performance drop using ALi AGP driver v1.53.

  1. Support Windows 95(OSR2.1)/Windows 98/Windows 98SE.
  2. ALi AGP Driver 1.53 add registry key to help Windows98 Device Manager to display proper
     chipset driver properties, like Provider, Date, Version.
  3. Support AMD K6-2 CXT core/K6-III MTRR feature. When ALi AGP Driver 1.53 detects a AMD CXT
     core CPU, it sets up MTRR to enable this feature.
  4. S3 Savage3D is not stable on M1621 system, ALi AGP Driver 1.53 has solved this problem.
  5. ALi AGP Driver 1.50 does not work well in Win98 with the Savage4. System may turn into
       BSOD(Blue Screen Of Death). ALi AGP Driver 1.53 has solved this problem.
  6. System may turn into BSOD when executing Turok on Intel i740 and M1621 based system. ALi
     AGP Driver 1.53 has solved this problem.
  7. Solve system poor performance for Intel i740 in Windows 95. Need Intel i740 driver version
  8. Asus P5A bios 1005 sets up M1541 GAT mode and this will cause problem in ATI Rage 128.
     ALi AGP Driver 1.53 has solved this problem.

9. Known issues
Windows XP:
  1. End users should download Windows XP VGA drivers from
     VGA vendor web site to upgrade default VGA drivers if default VGA driver
     seems not to work properly, like D3D or AGP Texture Acceleration not enabled.

Acer Laboratories Inc. (ALi) web sites: (Taiwan) (America) 
Download Driver Pack

How To Update Drivers Manually

After your driver has been downloaded, follow these simple steps to install it.

  • Expand the archive file (if the download file is in zip or rar format).

  • If the expanded file has an .exe extension, double click it and follow the installation instructions.

  • Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.

  • Find the device and model you want to update in the device list.

  • Double-click on it to open the Properties dialog box.

  • From the Properties dialog box, select the Driver tab.

  • Click the Update Driver button, then follow the instructions.

Very important: You must reboot your system to ensure that any driver updates have taken effect.

For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.

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