TECHNICAL INFORMATION DOCUMENT

TITLE: TF2047 - SMC8K Driver update
DATE:  05JUN95
README FOR:  TF2047
PRODUCT and VERSION:

UnixWare 2.0

Installation Instructions:  

DATATYPE: datastream

1.  Download the tf2047.Z and tf2047.txt files to the /tmp directory
    on your machine.

2.  Read the release notes contained in this file and follow the 
    instuctions to add the package to your system.

3.  Now become root, uncompress the file and add the package to your 
    system using the following commands:

        $ su
        # uncompress /tmp/tf2047.Z
        # pkgadd -d /tmp/tf2047


ENGINEERING REALEASE NOTES
--------------------------

Title
-----

PTF2047 - SMC8K Driver update

Product And Version
-------------------

UnixWare 2.01 and UnixWare 2.02

Abstract
--------

This ptf fixes a problem with the SMC8K NIC that occurs
when the board starts taking interrupts before all of the
data structures are initialized. This fix is put into 
the lsl and msm modules.

Symptom
--------

This problem exhibits itself with a panic, usually during
startup or shutdown.

SOLUTION SPECIFICS
------------------

General Description.
-------------------

The modules that fit above the SMC8K driver in the kernel have
been modified to keep interrupts suppressed until all of the
data structures have been fully initialized and the stream
is completely put together.

New Features.
------------

None

Software Notes and Recommendations.
----------------------------------

This ptf should only be installed on systems that already have 
the SMC8K driver installed. It should also only be installed on
UnixWare 2.01 and UnixWare 2.02 systems. The fix will be put into
the 2.03 release of UnixWare and need not be re-installed at that
time.

Testing of the modified software contained in this package has been
conducted only to the extent necessary to confirm that it resolves the
problem(s) stated above ("Symptom").  Such testing consists of
recreating the problem conditions and verifying that the problem no 
longer occurs.  No other testing of this software has been done.

Hardware Notes and Recommendations.
----------------------------------

This PTF is targeted for the i386, i486 and Pentium CPU's.