Windows NT 4.0 v7.45 Driver Release for all IBM Broadcom 570x-based Gigabit 
Ethernet Adapters solutions for xSeries
===========================================================================

This package provides the latest v7.45 NT 4.0 driver update for IBM xSeries
Broadcom 570x-based Gigabit Ethernet, for Microsoft Windows NT 4.0.


CONTENTS
--------

1.0   Overview
      1.1   Limitations
2.0   Update Info
3.0   Build and Installation Instructions
4.0   Configuration Information
      4.1 Driver Parameters
      4.2 Additional Configuration Information
5.0   IBM Web Support
6.0   Trademarks and Notices
7.0   License and Disclaimer


1.0  Overview
_____________

This package provides the Windows NT 4.0 v7.45 driver update for all IBM
xSeries Broadcom 570x-based Gigabit Ethernet.

The support includes xSeries options 22P7801, 31P6301, and 31P6401.


1.1   Limitations
_________________

No known limitation.


2.0   Update Info
_________________

b57nt4.sys          v7.45    for NT 4.0


Key update with v7.45 release:

Enhancement added to support xSeries systems with more than 4G RAM.
With previous drivers, Broadcom ethernet has problem transmitting
data with systems with more than 4G RAM.

Enhancement added for 5703 Fiber SX connection to avoid loss of link
after system reboot.

Enhancements added to the driver link timer and autonegotiation 
mechanism to prevent the adapter from intermittently dropping 
from network connection during a system reboot or during an
adapter disable / enable event.

Proper programming of GPIO2 to not allow the adapter to draw power
from VAux during device initialization, to prevent the adapter from
being removed from the PCI Bus.

Enhancement added to accomodate for 0 byte DMA request from Win95 or
Win98 client to prevent the server system from running into an IERR.


3.0   Build and Installation Instructions
_________________________________________

Refer to the user's guide on v7.05 CD image for NT 4.0 driver install 
instructions.


4.0   Configuration Information
_______________________________

Refer to 3.0 above.


4.1 Driver Parameters
---------------------

Refer to 3.0 above.


4.2 Additional Configuration Information
----------------------------------------

Refer to 3.0 above.


5.0   IBM Web Support
_____________________

IBM Support Web Site:
   
   http://www-3.ibm.com/pc/support/site.wss/



6.0   Trademarks and Notices
____________________________


The following terms are trademarks of the IBM Corporation in the
United States or other countries or both:

IBM
eServer xSeries

Broadcom and NetXtreme are registered trademarks of Broadcom Corporation.

Other company, product, and service names may be trademarks or service
marks of others.


7.0  License and Disclaimer
___________________________

This software is provided by Broadcom to IBM for redistribution under
IBM/Broadcom agreement for IBM Broadcom 570x-based Ethernet products.