Broadcom Corporation
                           16215 Alton Parkway,
                           Irvine, CA 92619-7013

                               Release Notes
             Broadcom BCM5700 SCO OpenServer Release 5 driver
                                04/02/2001


Introduction
============

This file describes the SCO OpenServer Release 5 driver for Broadcom's BCM5700
10/100/1000 Mbps Ethernet Network Interface Controller.


Driver Software Package
=======================

The driver is released as a media image file containing the driver package. This
media image file can be copied to the target machine directly for installation,
or a floppy installation disk can be made.


Creating Floppy
===============

1. Copy the file VOL.000.000 to an SCO system.

2. Create the floppy using dd if=VOL.000.000 of=/dev/rfd0135ds18


Installing Driver
=================

Use custom or scoadmin software to install the driver from the media image or
from the floppy created above. After the package is installed, use netconfig to
add the new network adapter. Once added, modify the hardware configuration in
Advanced Options to change line speed and flow control if desired. The
different settings of these parameters are listed below:

    LineSpeed:    AutoNegotiate (default)
                  HalfDduplex10
                  FullDduplex10
                  HalfDduplex100
                  FullDduplex100
                  FullDduplex1000*

    FlowControl:  Off (default)
                  AutoNegotiate** (Symmetric Pause advertised)
                  RxPause
                  TxPause
                  RxPause/TxPause

*Note that 1000 Mbps (1 Gbps) full duplex fixed speed is only valid for fibre
connections. For copper twisted pair connections, 1 Gbps can only be set
through auto negotiation with a 1 Gbps link partner.

**Note that auto negotiation of flow control is only valid when the line
speed is set to auto negotiation.

A kernel relink and reboot is required before the new configuration
will take effect.

Jumbo Frames and Other Advanced Parameters
==========================================

Jumbo MTU sizes and other advanced tunable parameters for the BCM5700
controller are located in the file space.c in the directory
/etc/conf/pack.d/bcme. Description for each parameter is contained in space.c.
Modify the desired parameter in space.c, rebuild the kernel, and reboot the
system. Note that the MTU sizes can be individually set for each adapter in
the system whereas all other paramters apply globally to all adapters.

Revision History
================

v1.0.7 (04/02/01)

- Fixed a symbol error reported by ANT test suite.

v1.0.6 (03/30/01)

- Added logic to free buffers on the write queue when it reaches high water
  mark.
- Added workaround for AMD Athlon systems.

v1.0.5 (03/23/01)

- Added fibre support.
- Added jumbo frames.

v1.0.4 (02/23/01)

- Fixed problems found by the ANT test suite.

v1.0.3 (02/14/01)

- First Release.