DHX Driver Suite Version 4.30.01 (Service Pack 1) Release Notes
November, 2000

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                        Table Of Contents
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1.0 Introduction
    1.1 Windows NT/9x
    1.2 Windows 2000

2.0 What’s in Service Pack 1?
    2.1 DHX Driver - Windows NT/9x
    2.2 DHX Driver - Windows 2000
    2.3 Ethernet DHX Driver - Windows NT/2000
    2.4 Remote DHX Driver - Windows 9x/NT/2000
    2.5 Virtual DHX Driver - Windows 9x/NT/2000

3.0 Who should install Service Pack 1?

4.0 Installing Service Pack 1

5.0 Re-installing Service Pack 1

6.0 Removing Service Pack 1

1.0 Introduction
----------------
Service Pack 1 for the DHX Driver Suite 4.30.00 (SP1) installs the
latest updates to all currently installed DHX driver products
version 4.30.00.

1.1 Windows NT/9x
-----------------
Under Windows NT 4.0 and Windows 95/98, SP1 adds the latest updates
to the DHX driver products. However, SP1 does not add new features
or functionality.


1.2 Windows 2000
----------------
Under Windows 2000, in addition to installing regular updates, SP1
adds Plug-and-Play (PnP) support to the DHX Driver. Specifically,
support for the 1784-PCMK, 1784-PCMK Series B (PCMCIA), 1784-PKTX/A,
1784-PKTXD/A (PCI) cards has been added.

2.0 What’s in Service Pack 1?
-----------------------------
The following sections list all SP1 updates to the individual DHX
driver products.

2.1 DHX Driver - Windows NT/9x
------------------------------
*  No functional changes. Some components have been updated to
   ensure consistency among all DHX driver products.

2.2 DHX Driver - Windows 2000
-----------------------------
Windows 2000 introduced a number of architectural changes compared
to its predecessor, Windows NT 4.0. One of the major changes is the
introduction of the Windows Driver Model (WDM) for kernel mode
device drivers. This new model, based on the original Windows NT
driver model, introduces a number of new features, like Plug and
Play and Power Management support, which Windows NT 4.0 drivers
do not support.

The DHX Driver 4.30.00 was designed for Windows NT 4.0. However,
since Windows 2000 provides backward compatibility for Windows NT
drivers, the DHX Driver, in most cases, operates fine on a Windows
2000 system. Specifically, all ISA bus adapter cards (like 1784-KT)
operate correctly. Unfortunately, Windows NT 4.0 support for the
PCMCIA cards is incompatible with Windows 2000. Therefore, all
PCMCIA cards (1784-PCMK, 1784-PCMK Series B) would not operate in
a Windows 2000 system. To remedy the situation, SP1 adds PnP
support for the PCMCIA cards. It also upgrades support for the PCI
cards (1784-PKTX/A and 1784-PKTXD/A) to the full Windows 2000 WDM
compliance.

The following lists all SP1 updates to the DHX Driver under
Windows 2000:

*  Plug-and-Play support for 1784-PCMK, 1784-PCMK Series B (PCMCIA),
   1784-PKTX/A and 1784-PKTXD (PCI) cards under Windows 2000 has
   been added.

*  The help file (including the PDF version) has been updated to
   cover the new Plug-and-Play support under Windows 2000.

*  Some cosmetic changes (improved messages) in the configuration
   editors.

2.3 Ethernet DHX Driver - Windows NT/2000
-----------------------------------------
*  Added support for large PLC5 typed-write unsolicited messages.

*  Fixed a problem with the handling of PLC5 typed-write unsolicited
   messages sending ASCII data.

*  Some components have been updated to ensure consistency among all
   DHX driver products.

2.4 Remote DHX Driver - Windows 9x/NT/2000
------------------------------------------
*  No functional changes. Some components have been updated to
   ensure consistency among all DHX driver products.

2.5 Virtual DHX Driver - Windows 9x/NT/2000
-------------------------------------------
*  No functional changes. Some components have been updated to
   ensure consistency among all DHX driver products.

3.0 Who should install Service Pack 1?
--------------------------------------
Service Pack 1 installs the latest updates to all currently
installed DHX driver products version 4.30. Therefore, we strongly
recommend installing this service pack.

Some of the SP1 updates to some of the DHX products are strictly
cosmetic and may not warrant an upgrade. However, if you are using
or planning on using PnP cards (PCMCIA and PCI) under Windows 2000,
we strongly recommend installing the service pack. Also, if you are
using the Ethernet DHX Driver, you should install the service pack.

4.0 Installing Service Pack 1
-----------------------------
To have the latest updates, install this service pack whenever a
DHX driver product is installed or re-installed from the original
DHX Driver Suite 4.30.00 CD. For proper operation, all DHX Driver
products should always be at the same version level.

To install SP1, run Setup.exe from the base directory.

The installation program will automatically locate all DHX driver
products version 4.30.00 (or version 4.30.01) on your system and
apply the updates.

5.0 Re-installing Service Pack 1
--------------------------------
This service pack can be re-installed even if it has already been
installed.

To have the latest updates, re-install this service pack whenever
a DHX driver product is installed or re-installed from the
original DHX Driver Suite 4.30.00 CD. For proper operation, all
DHX Driver products should always be at the same version level.

6.0 Removing Service Pack 1
---------------------------
There is no uninstall option for this service pack. In order to
revert back to the original version 4.30.00, all DHX driver
products must be re-installed from the original DHX Driver Suite CD.

