Dear Caldera Customer,

Support Level Supplement (SLS) ptf4024f, the Intel P6 Microcode Driver for
SCO UnixWare 2.1.x, provides the proper microcode fixes to the system's
Pentium Pro, Pentium II, Pentium II Xeon, Pentium III, Pentium III Xeon,
and Celeron processors. Using SLS ptf4024f, the processor serial number
can be disabled on those processors implemented with a processor serial
number.


Problems Fixed
--------------

1. Some models and steppings of the Intel Pentium Pro processor,
   Intel Pentium II  processor, Intel Pentium II  Xeon processor,
   Intel Pentium III processor, Intel Pentium III Xeon processor,
   and Intel Celeron processor may contain design defects or errors
   known as errata, which may cause the processor to deviate from
   published specifications.

   Some of these errata can be fixed by updating the microcode of the
   processor at system startup.  This SLS installs microcode updates
   provided by the Intel Corporation to do that.

2. An Intel Pentium III or Pentium III Xeon processor has a Processor
   Serial Number that can be accessed by software using the "cpuid 3"
   instruction.  However, some administrators prefer that their systems
   cannot be identified in this way.

   When installing this SLS, you may choose that Processor Serial Numbers
   be erased, immediately and whenever the system reboots.


Contents
--------

        /etc/conf/node.d/msr
        /etc/conf/pack.d/msr/Driver.o
        /etc/conf/pack.d/pstart/space.c
        /etc/conf/mdevice.d/msr
        /etc/conf/sdevice.d/msr
        /etc/p6updata
        /sbin/p6update


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

SLS ptf4024f can be installed on:

        UnixWare 2.1.3

SLS ptf4024f supersedes ptf4024e, however it is not necessary to remove
earlier versions of ptf4024 before installing SLS ptf4024f. SLS ptf4024f
contains more recent, P6 microcode updates from the Intel Corporation.

Any P6 microcode updates needed are applied when SLS ptf4024f is installed,
and by "/sbin/p6update" after the system has run "/sbin/psradm -n -a" to
online all processors (on entry to init state 1, 2, 3 or 4).  If the installer
chose to erase Processor Serial Numbers, that is done at the same time.

SLS ptf4024f is only of benefit if your processor is a genuine Intel
processor of the P6 family: Pentium Pro, Pentium II, Pentium II Xeon,
Pentium III, Pentium III Xeon, or Intel Celeron processor.  However,
ptf4024f can be safely installed on all other processor types.


Installation Instructions
-------------------------

1. Download the ptf4024f.Z file to the /tmp directory on your machine.

2. As root, uncompress the file and add the SLS package to your system
   using these commands:

        $ su
        Password: <type your root password>
        # uncompress /tmp/ptf4024f.Z
        # pkgadd -d /tmp/ptf4024f
        # rm /tmp/ptf4024f

3. There is no need to reboot the system after installing this SLS package,
   but the kernel may be rebuilt when the system is next rebooted.

The release notes displayed prior to installation can be found in:

        /var/sadm/pkg/ptf4024/install/ptf4024.txt


Removal Instructions
--------------------

1. As root, remove the SLS package using these commands:

        $ su
        Password: <type your root password>
        # pkgrm ptf4024

2. Reboot the system after removing this SLS package.


If you have questions regarding this SLS, or the product on which
it is installed, please contact your software supplier.