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                Copyright (c) 1995-1998 VIA Technolgies Inc.              
                                                                          
            VIA Bus Master(Ultra DMA) PCI IDE Driver ReadMe.Txt                
                                    for                                   
                                Win95/WinNT                               
                                                                          
   * This readme file is used to provide the information for installation,
     Enable/Disable DMA and Uninstall "VIA Bus Master PCI IDE Driver".    
  

    The VIA Bus Master IDE controller is a high performance Bus  Master  PCI 
  IDE controller. This "VIA Bus Master PCI IDE Driver"  distribution  floppy
  is used to utilize the DMA operation of your Hard disk/CD-ROMs  drives  in 
  order to release the I/O loading from the  CPU. You  could  refer  to  the
  related section to install the driver individually.

                                CONTENTS
                        ***********************
1)  System Requirements
2)  Distribution Package Contents
3)  Windows 95 Driver
4)  Windows NT Driver
5)  Package Version Identify
6)  Notes


1) System Requirements

   * This package should be installed on the VIA Bus Master IDE chipset,
     VT82C580VP or later, and others' chipset will not be supported.

   * The "VIA Bus Master PCI IDE Driver" supports the following Operation
     System.

        Operation System                Version             
     
        Windows 95                      4.00.950 or above
        Windows NT                      3.51 or above
                                        

2) Distribution Package Contents  
     This distribution floppy is compress by auto uncompressing format. You 
   could uncompress it by execute it.
 
   The floppy by uncompressing includes these files are listed below. 

FLOPPY :
   SETUP.EXE                   "WIN95/WINNT" Setup Program
   DATA.TAG                    InstallShield5 related files below
   SETUP.INI   
   _INST32I.EX_
   _ISDEL.EXE  
   _SETUP.DLL  
   _SYS1.CAB   
   _USER1.CAB  
   DATA1.CAB   
   LANG.DAT    
   LAYOUT.BIN  
   OS.DAT      
   SETUP.BMP   
   SETUP.INS   
   SETUP.LID   

WIN95
       VIADSK.MPD              Windows 95 DMA/PIO device driver file
       VIAIDE.INF              Windows 95 ".INF" file
       VIAIDE.VXD              Windows 95 VIA .VSD device driver file

WINNT 
        VIADSK.SYS              Windows NT 3.51 or above DMA/PIO device driver file 
        VIAIDE.INF              Windows NT 3.51 or above ".INF" file


3)  Windows 95 Driver
    
    *************************
    ** Driver Installation **
    *************************
      Click the SETUP.EXE program and select "Install"  button  then it will 
    install the "VIA IDE Bus Master Driver" automatically on your Windows 95
    system. It will copy the driver to the \WINDOWS\SYSTEM\IOSUBSYS and  set 
    the related registry tree.    

    ************************
    ** Enable/Disable DMA **       
    ************************
      The default setting is the DMA mode. You could turn off the DMA setting
    by running "SETUP.EXE"  again  and select the "Enable/Disable DMA" button 
    to disable the DMA mode.

    ***************************
    ** Driver Uninstallation **
    ***************************
      You  could remove the "VIA Bus Master PCI IDE Driver" by selecting the
    "Uninstall" button. It will completely remove the driver from the sytsem.
    
4)  Windows NT Driver
    *************************
    ** Driver Installation **   
    *************************
      Click the SETUP.EXE program and select "Install"  button  then it will 
    install the "VIA IDE Bus Master Driver" automatically on your Windows NT
    system. It will copy the driver to the \WINNT\SYSTEM32\DRIVERS  and  set 
    the related registry tree.    
     
      You should follow the procedure listed below to complete the  install-  
    ation. 
 
      a) Select the "SCSI Adapters" icon on the "Control Pannel"
      b) Select the "Add.." button on the "Drivers" sheet.
      c) Select the "VIA Bus Master PCI IDE Driver" and click "OK" button.
      d) Reboot the sytem.

    ************************
    ** Enable/Disable DMA **       
    ************************
      The default setting is the DMA mode. You could turn off the DMA setting
    by running "SETUP.EXE"  again  and select the "Enable/Disable DMA" button 
    to disable the DMA mode.

    ***************************
    ** Driver Uninstallation **    
    ***************************
      You could remove the "VIA Bus Master PCI IDE Device Driver" by  running
    the "SETUP.EXE" again to uninstall the driver. "VIA Bus  Master  PCI  IDE 
    Device Driver" will not be started by this operation. You  could  restart
    it latter if it is necessary. After the reboot, the default "IDE CD-ROM (
    ATAPI) Dual-channel PCI IDE Controller" driver will be started.

     If you want to totally remove the "VIA Bus Master PCI IDE Device Driver"
    then you could follow the steps listed below.

      a) Select the "SCSI Adapters" icon on the "Control Pannel"
      c) Select the "VIA Bus Master PCI IDE Driver".
      b) Select the "Remove" button on the "Drivers" sheet.
      d) Reboot the sytem.


5) Package Version Identify
     You could check this distribuation version and release date by using 
   the DATE\TIME displayed by using dir/p command, e.g :
    
        SETUP    EXE        59,392  09-06-97  2:12a SETUP.EXE

     The time column is 2:30a which means the package distribution version
   is 2.1.1 and is released on the Sep. 06 '97.

6) Notes
   *   It is recommended to install the CD-ROM which is not on the same
     channel with the hard drive for the performance issue.

       If you play VCD or DVD abnormally on some CD-ROM or DVD-ROM which
     is on the same channel with hard drive, we recommand you to setup
     the CD-ROM or DVD-ROM on the separatly channel.

   *   You should run the ATAPI ZIP 100MB setup program first for the 
     WinNT 3.51/4.0 in order to use ZIP ATAPI 100MB normally on your 
     system. 

       If you run the VIA Bus Master setup program first and then the ATAPI 
     ZIP 100MB setup program. After the ATAPI ZIP 100MB setup program, it
     will disable the VIA Bus Master driver after the installation. You
     could use the following steps to disable the ATAPI ZIP 100MB driver and
     enable the VIA Bus Master driver again.
         
       1. Double click the "Devices" icon from Control Panel.

       2. Select the service for IDE/ATAPI ZIP drive. (ex. imgatapi)

       3. Press the "Startup" button and select "Disabled".

       4. Press "OK" and reboot computer.



