
                 NS486SXF Evaluation Board Software - README                        
                 -------------------------------------------
 
                              April 25, 1997

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This disk contains software for the NS486SXF evaluation board.  This
software is intended to demonstrate how to use the NS486SXF evaluation 
board and provide sample NS486SXF code.


CONTENTS
--------

  FLASHLDR\   - The NS486SXF Flash Loader utility.  This utility
                allows you to download code into the evaluation
                board flash and run the code or set it to boot.  See
                the printed Flash Loader Reference and the file
                "README.TXT" in the directory for more information.

  NSDEMO\ - This directory contains an extensive C program that can be
            built and executed on the NS486SXF evaluation board using
            Pharlap's ETS Lite, SSI's Link&Locate 386 Evaluation
            version, or OnTime's RTTarget-32.  This program uses most of the 
            peripherals of the NS486SXF to demonstrate proper use.  Each 
            peripheral used has a C module that could be used as sample 
            code or incorporated into your own test code to access the 
            peripherals. The file "README.TXT" in the directory and the 
            NS486SXF evaluation board printed manuals discuss this code 
            further.
  
  INC\ - This directory has include files (for C and Assembly) with all
         the registers in the NS486SXF defined symbolically.  These files 
         are used by the example programs, and can be used in new software 
         you develop to simplify access to IO registers and reduce
         typos.  See the file "README.TXT" in this directory for additional
         information.

  ASM\ - This directory contains three subdirectories with Assembly code
         for the NS486SXF.  This code is example start up code that
         could be adapted for your own hardware designs.  See the file
         "README.TXT" in this directory for additional information.

  UTIL\ - This directory contains utilities for the NS486SXF evaluation
          board.  Currently there is one utility, PCMBOOT, which can be used
          to make "PCMCIA bootable extensions", as described in the
          Flash Loader README file.  See the "README.TXT" file in the
          "PCMBOOT" subdirectory for additional information.

  APPNOTE\ - This directory contains Application Notes for the NS486SXF or
             the evaluation board.  These documents contain detail on a
             specific topic beyond what is in the datasheet, and often
             correspond to code in NSDEMO.  See the "README.TXT" file in
             the "APPNOTE" subdirectory for additional information.

COMMENTS
--------

Please use the Flash Loader first to become familiar with the
environment.  After that, the example programs can be executed and
studied to gain insight into programming the NS486SXF and the evaluation
board.

If you have any questions or need support with the NS486, please contact 
the NS486SXF group at the email address "ns486@arador.nsc.com".

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