Patch files for Foundation Board
                              FPGA Configuration

  What is Provided by this Patch?
  -------------------------------

     This patch provides an update for the Empack foundation board back-end
     FPGA configuration for systems using version 3.4.8 of the Empack Host
     and Embedded code.

     Do not use this patch if your system is using version 3.5.0 or higher.
     The new FPGA configuration is provided is versions 3.5.3 and higher.


  Reason for 349 Patch
  ----------------------

     Empack foundation boards produced in January 2004 and later - those with
     serial numbers 13535950 and higher - exhibit timing problems caused by
     differences in the electrical and timing characteristics of certain
     components on the board.  A modification to the configuration of the
     "back-end" FPGA solves the problem.

     CAC will not be producing a full release of the 3.4.x vintage software.
     Empacks with the new foundation boards are shipped with the new FPGA
     configuration.  However, should it become necessary to reload the flash
     contents, it should be done with the new FPGA configuration.  This patch
     is provided for those customers who are not upgrading to the 3.5.x
     vintage software.
     

  Determining FPGA Versions
  -------------------------

     The version of the "Back-End Baseboard FPGA" configuration included
     in this patch is R1.6.

     It may be desirable to be able to determine the version of the FPGA
     configurations currently resident in an Empack's flash to know
     whether the patch needs to be installed.

     To determine the FPGA configuration versions you need to use the command
     line emflash program from software release version 3.4.2 or higher that
     supports the -l (lower-case L) option.  Using this option will report
     the versions of the individual flash objects.  Alternatively, the
     Windows software release included a GUI version of emflash called
     "EmWinFlash".  Using that program on Windows systems, the FPGA
     configuration versions are displayed by clicking the "Show Versions"
     button.


  Installing the Patch
  --------------------

     The file required for the patch should be contained in the same
     directory or folder as this "readme" file.  They are:

          fld349.bin    - Ebmedded code and FPGA configuration flash file.


     Also required is the emflash program available with your current
     EMAPI installation.

     To install the patch, follow the instructions below.  The procedure
     is the same for Windows and Solaris systems.  However, the steps are
     shown separately due to differences in the commands and file naming
     conventions.

     In either case some assumptions are made, for the purposes of example
     commands, as to the exact location of the installed files on your system.
     For Windows, it is assumed that the Empack software is installed in
     C:\cac.  For Solaris, it is assumed that the Empack software is
     installed in /usr/cac.  Make the appropriate directory substitutions
     when installing the patch on your system.  The commands should be run
     from the location of the patch files.

     - Patch Installation for Windows systems:

        1.  Copy the new FLD flash file to the Empack flash directory.

            C:\> copy  fld349.bin  c:\cac\empack\flash

        2.  Update the FLD code in the Empack flash.

            C:\> c:\cac\bin\emflash  -f  c:\cac\empack\flash\fld349.bin  all

     - Patch Installation for Solaris systems:

        1.  Copy the new FPGA flash file to the Empack flash directory.

            # cp fld349.bin /usr/cac/empack/flash

        2.  Update the FPGA configurations in the Empack flash.

            # /usr/cac/bin/emflash  -f  /usr/cac/empack/flash/fld349.bin  all


     If your current Empack software is version 3.4.2 or higher, the emflash
     program will automatically restart the Empacks to reconfigure the FPGAs.
     If not, you must manually cycle the power on the Empacks to have the new
     FPGA configurations take effect.