WESTERN DIGITAL
           "PLUS"-FAMILY LAN ADAPTER BOARD DRIVER FOR USE WITH 
                 3COM'S 3+ NETWORK OPERATING SYSTEM

       INSTALLATION GUIDE             December 13, 1988


This driver is for use with the WD8003-Family LAN Adapters:
StarCard PLUS (tm), StarLink PLUS (tm), StarCard PLUS/A (tm),
EtherCard PLUS (tm), EtherCard PLUS with Boot ROM (tm),
EtherCard PLUS TP (tm), and EtherCard PLUS/A (tm).

This document contains the information about how to install a
Western Digital WD8003-family LAN adapter board and driver in
3Com's 3+ (*) network.

1. Jumper the adapter according to your system configuration.

The WD.SYS Device Driver is installed at PC boot time according to
the command line specified in the DOS CONFIG.SYS file (described below).
The user must verify that the jumper settings on the adapter board
correspond to the software settings given on the device driver command
line.

Jumper settings for some adapter boards are described in the
JUMPERS.DOC file.  For more information, refer to the Western Digital
"User Installation Guide" that comes with each adapter board.

2. Insert the adapter in your PC.

3. Power up your PC.

4. Install the 3Com 3+ network software as specified in the 3Com
Installation and Configuration Guide.

5. After the installation is complete, copy the Western Digital driver
WD.SYS from this diskette to the root directory of your system drive
with a new name called ETH.SYS.  For example,

                 CD A:\3PLUS
                 COPY A:WD.SYS C:\ETH.SYS (XT/AT bus)
                               C:\ETH523.SYS (Micro Channel)

If 3+NetConnect (*) has been installed and the Western Digital board
is being used as a remote (secondary) network adapter, a secondary
driver (2WD.SYS) is used.  If necessary, copy that secondary
driver to the root directory.  For example,

                 COPY A:2WD.SYS C:\2ETH.SYS (XT/AT bus)
                                C:\2ETH523.SYS (Micro Channel)

6. If you changed the LAN adapter board's default parameters in step
1, you need to modify the DEVICE=[2]ETH.SYS command line in your
CONFIG.SYS file to reflect the jumper selections of step 1.  Use the
format:

                 DEVICE=ETH.SYS irq base page  (XT/AT bus)
    	         DEVICE=2ETH.SYS irq base page (XT/AT bus)
		   
		 DEVICE=ETH523.SYS irq base page  (Micro Channel)
		 DEVICE=2ETH523.SYS irq base page (Micro Channel)

where,

   irq  - IRQ level to receive adapter board interrupts         (3)

   base - I/O base address (in hexadecimal)                   (280)

   page - 4-digit memory segment byte address of the 8 Kbyte
          shared buffer memory (not jumpered on the board)   (C400)

The factory jumper settings for the WD8003-family adapter boards and
the WD.SYS default buffer memory base address are given in parentheses.

If these default values conflict with other adapter boards installed
in your system, you may need to change the values used by the LAN
adapter. For example, if you want to change the IRQ level to 4 and
the buffer memory base address to D0000 (segment address D000), then
you'll have to change the line

             "DEVICE=ETH.SYS" to "DEVICE=ETH.SYS 4 280 D000"

before rebooting the system.

PLEASE NOTE:  There are a number of PC boards that can conflict with
various possible shared memory addresses.  For example, the VGA and
EGA graphics adapters seem to use the area of memory in the range of
C000 through D400, depending on the type of adapter.  We have found
D000 to be a good address for users of EGA adapters;  D400 or DE00
work well for systems with the VGA adapters.  If you are seeing any
problems in getting the system to function, try moving the shared
memory base address.

7. Reboot the system.

For Micro Channel bus systems:

1. Configure the EtherCard PLUS/A (tm) or StarCard PLUS/A (tm)
using the .ADF file supplied on the SuperDisk with your adapter
card.  Use either the manual or automatic configuration
routines, ensuring that the settings do not conflict with other
devices in your system.

2. Continue the installation process using steps 2 through 7
above.


(*) 3Com and 3+ are registered trademarks and 3+NetConnect is a
trademark of 3Com Corporation.  Micro Channel is a registered
trademark of International Business Machines Corporation.

EtherCard PLUS, StarCard PLUS, and StarLink PLUS are trademarks
of Western Digital Corporation.