

		VG4 README.TXT File

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

     Device Driver Diskette...............................(Version 3.31)

     On this diskette you will find device drivers for the VG4 VL-Bus
     IDE Disk Controller.

     VG4.EXE	   (Version 3.30) is the installation utility.
     VG4.SYS	   (Version 3.30) is the driver for DOS.
     VG4.386	   (Version 3.30) is the driver for Microsoft Windows 3.1
		   and Windows for Workgroups 3.11
     VG4FDISK.EXE  (Version 1.20) is the drives partition utility
     DISK1.NT	   is the information file for Windows NT driver setup
     WIN_NT	   is the subdirectory containing the driver for Microsoft
		   Windows NT 3.1 and 3.5
     OS2	   is the subdirectory containing the driver for IBM OS/2
		   2.x and WARP
     NETWARE	   is the subdirectory containing the driver for Novell
		   Netware 3.x and 4.01
     UNIX	   is the subdirectory containing the driver for SCO UNIX
		   3.2.x and AT&T UNIX SVR 4.0
     WIN95	   is the subdirectory containing the driver for Microsoft
		   Windows 95

     +====================================================+
     | DOS Driver for VG4 VL-Bus IDE Controller 	  |
     +====================================================+

     Your VG4 disk controller needs the device drivers to take the
     advantage of the high performance 32-bit VL-Bus when running under
     assorted operating systems.

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

     1. Complete the installation steps from (1) to (8) which are described
	in the VG4 Installation Guide 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=C:\VG4\VG4.SYS [/F] [/W] [/P] [/D0:n or /M0:m]
				  [/D1:n or /M1:m] [/X2]



     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

     NOTE: Only one speed mode can be specified per VL-IDE device.  Either
     D or M speed mode should be specified on the individual VL-IDE device,
     NOT both.	It is possible to define different modes for separate
     VL-IDE devices.  Example: /D0:d /M0:m is illegal
			       /D0:d /M1:m is legal

     F	 : VG4 controller works in the Fast mode (Default operation
	   is in Turbo mode).

     W	 : VG4 controller works in the 16-bit data access mode.
	   Certain motherboard CPUs(for example, IBM 486 SLC2) have a 16-bit
	   external data bus and cannot operate in the default 32-bit data
	   access mode.

     P	 : VG4 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

     X2  : Disable ISA-IDE IDE HD support (default: Enabled)


     In the Fast(F) mode, the VG4 disk controller supports 32-bit
     VL-Bus I/O access. In Turbo(T) mode, the VG4 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, you may set your VG4 to run in the Turbo mode. When
     your system is brought up, the driver VG4.SYS will automatically
     issues 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, the VG4 disk
     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 your VG4 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 your VG4 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


	   +-----------------------------------------------+
	   |			  Notice		   |
	   |  To optimize the performance of your HDD	   |
	   |	please execute the Installation Utility    |
	   |	 to reconfigure your device driver	   |
	   +-----------------------------------------------+

     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 phe 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

	   +----------------------------------------------------+
	   |			  Notice			 |
	   | Please ensure the above setting is your preference. |
	   |  For better reliability and optimized performance	 |
	   |	please execute the Installation Utility 	 |
	   |	  to reconfigure your device driver		 |
	   +-----------------------------------------------------+

     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.

     Four IDE Drive Note
     -------------------
     1. The DOS Device driver "VG4.SYS" loads and supports the IDE
	hard disks on the secondary ISA-IDE connector. You can connect
	up to four IDE Hard disk Drives on your VG4.

     2. The Master/Slave drive settings for drives on the ISA-IDE
	connector are the same as for VL-IDE connector.  There should
	be only one master and one slave on the ISA-IDE connector.

     3. The ROM BIOS on the VG4 controller supports large IDE
	drives on the VL-IDE (J1) connector ONLY.

     4. 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
	EIFDISK.EXE enclosed in the "Drivers and Installation Utilities"
	diskette to partition you 3rd and 4th IDE drives before formatting
	them.

     IDE CDROM and other IDE Devices
     --------------------------------
	Other devices such as IDE CDROM and TAPE MUST support IDE ATAPI
	interface. The drive manufacturer provides software drivers to
	attach these drives.

	Be sure to configure the proper master/slave drive settings.  On
	BOTH PRIMARY and SECONDARY connectors, there is one master and one
	slave on EACH connector.

	On either PRIMARY or SECONDARY connector, the other IDE device
	relies on their supplied drivers.  The VG4.SYS driver does
	not load support for IDE devices besides IDE hard disks.

	When installed on the PRIMARY connector, set in the Mainboard
	Bios drive type to "not installed" for the other IDE device and
	when necessary, indicate the parameters IRQ14 PORT 1F0 for the
	driver installation.

	When installed on the SECONDARY connector, indicate IRQ15 and PORT
	170 for the driver installation.


     +===================================================+
     |	  VG4 device driver for Microsoft Windows 3.1 and|
     |	  Windows for Workgroups 3.11			 |
     +===================================================+

     The file VG4.386 is the Microsoft Windows 3.1 disk driver for the
     VG4 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 VG4 Installation Guide, 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 exit 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  : VG4 controller works in the Fast mode
	Turbo : VG4 controller works in the Turbo mode
		(default mode)

	W   : VG4 controller works in the 16-bit data access mode.
	      Certain motherboard CPUs(for example, IBM 486 SLC2) 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 VG4 disk
	       controller will be set to run under the default Turbo
	       and 32 bit data access mode.

	In the Fast(F) mode, the VG4 disk controller supports
	32-bit VL-Bus I/O access. In the Turbo(T) mode, the VG4 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, you may set your VG4 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, the VG4 disk 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 "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 regist red trademarks of IBM Corporation.

     UNIX is a registered trademark of American Telephone and Telegraph Corp.
     Netware is a registered trademark of Novell Corporation.
