VL-IDE-2 driver diskette (Rev. 1.0)

README.TXT File
Date : Nov 28,94

     +=======================+
     |	Release Information  |
     +=======================+


     VL-IDE-2 driver diskette (Rev. 1.0) contains the device drivers
     for the VL-IDE-2 VL IDE Disk Controller.

     VG4.EXE	  (Version 2.3) is the installation utility
     VG4.SYS	  (Version 2.3) is the driver for DOS
     VG4.386	  (Version 2.30) is the driver for Microsoft Windows 3.1 and
		  Windows Workgroups 3.11


     +================================================+
     |  DOS Driver for VL-IDE-2 VL-Bus IDE Controller |
     +================================================+


     Your VL-IDE-2 controller needs the device drivers to take the advantage
     of the high performance 32-bit VL-Bus.

     You can use the installation program "VG4.EXE" to install the DOS driver
     and Windows driver automatically (refer to the manual for details).
     If you want to install the drivers by yourself, please follow
     the procedures below:

     1. Complete the installation steps which are described
        in the VL-IDE-2 manual and boot to the DOS prompt.

     2. Copy the driver VG4.SYS to your system in the appropriate path.

     3. Add the following statement to your CONFIG.SYS file:

   device=[drive:][\path\]VG4.SYS [/F] [/W] [/P] [/D0:n|/M0:m] [/D1:n|/M1:m]

        where [drive:] and [\path\] point to the directory that contains the
	VG4.SYS file.  The parameters F, W and P define the operating mode,
	and D0, D1, M0, M1, n, and m define the speed settings of the
	attached hard drives.

        F   : VL-IDE-2 controller works in the Fast mode(Default operation is
	      in Turbo mode).
        W   : VL-IDE-2 controller works in the 16-bit data access mode.
              Certain motherboard CPUs have a 16-bit external data bus
              and cannot operate in the default 32-bit data access mode.
        P   : VL-IDE-2 controller works in the Power-Saving-Detection mode.
              This parameter is used when the IDE drive is not fully
              compatible with the power saving functions.

        D0  : drive 0 PIO speed setting
        D1  : drive 1 PIO speed setting
        n   : drive speed from 0 to 8, or A
              0 to 8 : PIO speed level(speed 8 is the so-called MODE 3
                       timing
              A :      IORDY indicator

        M0  : drive 0 DMA speed setting
        M1  : drive 1 DMA speed setting
        m   : drive speed from 0 to 8
              0 to 8 : DMA speed level


        In the Fast(F) mode, the VL-IDE-2 controller supports 32-bit VL-Bus
        I/O access. In the Turbo(T) mode, VL-IDE-2 not only supports 32-bit
        VL-Bus I/O access but also read/write multiple commands.  Since
        read/write multiple commands allow the host to access disk data in
        multiple-sector blocks, the Turbo mode will usually be faster.

        Note that not all IDE drives support the read/write multiple
        commands. Usually, set your VL-IDE-2 to run in the Turbo mode.
        When your system is brought up, the driver VG4.SYS will
        automatically issue an Identify Drive command to check if the
        attached IDE drive(s) support the read/write multiple commands.
        In case your drive(s) does not support the read/write multiple
        commands, VL-IDE-2 controller will automatically be forced to run
        in the Fast mode.

        Please also note: While some IDE drives may respond to the Identify
        Drive command and confirm its capability to support the read/write
        multiple commands, they may not support the read/write multiple
        commands properly.  In such cases, you will need to specify the
        operating mode as "F" explicitly to ensure reliable operation of
        such IDE drives.

     Example:

     The DOS driver VG4.SYS resides in the root directory of the drive C:.
     If you want VL-IDE-2 controller to run in the TURBO mode; drive 0 at
     speed 3 and drive 1 at speed 5. Please add the following statement
     to the file CONFIG.SYS.

        device = c:\VG4.SYS /D0:3 /D1:5

     If VL-IDE-2 controller has to run in the Fast mode, the statement must
     be changed to:

        device = c:\VG4.SYS /f /D0:3 /D1:5

     If the DOS driver is installed manually, you might have the following
     three types of prompt messages when you boot up the system.

 (a) HDD 0 setting: FAST  Mode, Speed 5 by DEVICE DRIVER AUTOMATICALLY
     HDD 1 setting: Turbo Mode, DMA Speed 5 by DEVICE DRIVER AUTOMATICALLY

     Where the operating mode and the speed parameter may vary with the hard
     drive(s) attached. This message will be shown when the device driver is
     installed without any user specified parameter and the drive(s)
     attached can be found in the internal speed table of the DOS driver.

 (b) HDD 0 setting: FAST  Mode, Speed 2 by HARDWARE JUMPER SETTING
     HDD 1 setting: Turbo Mode, Speed 2 by HARDWARE JUMPER SETTING

     Where the operating mode and speed parameter may vary with the hard
     drive(s) attached.  This message will be shown when the HDD(s) can't be
     found in the internal speed table.	It might appear when the drive(s)
     are brand new models for the device driver, or the device driver is
     copied from other PC's hard drive. The Installation Utility stands for
     the VG4.EXE.

 (c) HDD 0 setting: FAST  Mode, Speed 5 by USER DEFINED SETTING
     HDD 1 setting: Turbo Mode, Speed 5 by USER DEFINED SETTING

     Where the operating mode and speed parameter may vary with the hard
     drive(s) attached. This message will be shown when user defined
     parameter is entered with the DOS device driver. The Installation
     Utility stands for the VG4.EXE.

     [Note]

     1. VG4.SYS support secondary IDE connector. You can connect up to four
        IDE Hard disk Drives on your VL-IDE-2 controller.

     2. If you would like to connect 3 (or 4) IDE hard disks, make sure the
        DOS driver VG4.sys in installed. Than you can use the VG4FDISK.EXE
        enclosed in the "Drivers and Installation Utilities" diskette to
        partition you 3rd and 4th IDE drives drives before formatting
        them.

     +=======================================================================+
     | VL-IDE-2 driver for Microsoft Windows version 3.1 & Workgroups 3.11   |
     +=======================================================================+

     The file VG4.386 is the Microsoft Windows 3.1 disk driver for VL-IDE-2
     disk controller.

     While Microsoft Windows version 3.1 supports 32-bit disk access, the
     disk data transfer between host and the IDE adapter is still limited
     by the 16-bit ISA bus.  If you want to speed up your hard drives under
     Windows through the 32-bit VL-Bus, you need this driver.  In addition,
     the driver also allows your host to access the disk data through the
     faster "read/write multiple" commands.

     If you choose to install the Windows driver manually, you should
     complete the installation steps from (1) to (8) which are described
     in the VL-IDE-2 manual, then follow the steps below:


     1. Copy the driver VG4.386 to your system in the appropriate path.

        It is recommended that the driver VG4.386 be copied to the Windows
	SYSTEM directory.

     2. Check if the following lines exist in the [386Enh] section of your
	SYSTEM.ini file.

	[386Enh]
	32BitDiskAccess=ON
	device=*int13

	If the statements do not exist, add them into the [386Enh] section.
	If the statements exist, but 32BitDiskAccess is set to "OFF", change
	it to "ON".


     3. Delete the "device=*wdctrl" device setting.

	Delete the command line "device=*wdctrl" from the [386Enh] section
	of your SYSTEM.INI file, if it exists.

     4. Install the virtual device "VG4.386".

	Add the following command lines in the [386Enh] section of the
	SYSTEM.INI file:

        device=[drive:][\path\]VG4.386
	DisksAccessMode=[Fast|Turbo] [/W] [/D0:n|/M0:m] [/D1:n|/M1:m]

	The [drive:] and [\path\] point to the directory that contains
        VG4.386 file. Note that the setting must specify the full path
        of the device driver VG4.386.

	The setting of disk_access_mode specifies the disk access mode as
	follows:

        Fast  : VL-IDE-2 controller works in the Fast mode
        Turbo : VL-IDE-2 controller works in the Turbo mode(default mode)

        W     : VL-IDE-2 controller works in the 16-bit data access mode.
                Certain motherboard CPUs have a 16-bit external data bus
                and cannot operate in the default 32-bit data access mode.

        D0    : drive 0 PIO speed setting
        D1    : drive 1 PIO speed setting
        n     : drive speed from 0 to 8, or A
	        0 to 8 : PIO speed level(speed 8 is the so-called MODE 3
			 timing
	        A      : IORDY indicator

        M0    : drive 0 DMA speed setting
        M1    : drive 1 DMA speed setting
        m     : drive speed from 0 to 8
                0 to 8 : DMA speed level


        Note  : If no parameter is specified, the VL-IDE-2 controller will
                be set to run under the default Turbo and 32 bit data access
                mode.

        In the Fast(F) mode, the VL-IDE-2 controller supports 32-bit VL-Bus
        I/O access.  In the Turbo(T) mode, VL-IDE-2 not only supports 32-bit
        VL-Bus I/O access but also read/write multiple commands.  Since
        read/write multiple commands allow the host to access disk data in
        multiple-sector blocks, the Turbo mode will usually be faster.

        Note that not all IDE drives support the read/write multiple
        commands. Usually, set your VL-IDE-2 to run in the Turbo mode.
        When your system is brought up, the driver VG4.386 will
        automatically issue an Identify Drive command to check if the
        attached IDE drive(s) support the read/write multiple commands.
        In case your drive(s) does not support the read/write multiple
        commands, VL-IDE-2 controll will automatically be forced to run
        in the Fast mode.

        Please also note: While some IDE drives may respond to the Identify
        Drive command and confirm its capability to support the read/write
        multiple commands, they may not support the read/write multiple
        commands properly.  In such cases, you will need to specify the
        operating mode as "Fast" explicitly to ensure reliable operation of
        such IDE drives.

     +=============================+
     |	Trademark Acknowledgments  |
     +=============================+

     VESA is a registered trademark of the Video Electronics Standards
     Association. VL-Bus is a trademark of the Video Electronics Standards
     Association.

     MS-DOS and Windows are registered trademarks of Microsoft Corporation.
     PC, PC-AT and OS/2 are registered trademarks of IBM Corporation.

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