*******************************************************************************
** Copyright © 2008, Xilinx, Inc. 
** This design is confidential and proprietary of Xilinx, Inc. All Rights Reserved.
*******************************************************************************
**   ____  ____ 
**  /   /\/   / 
** /___/  \  /   Vendor: Xilinx 
** \   \   \/    Version: 1.0
**  \   \        Filename: button_led_test_readme.txt 
**  /   /         
** /___/   /\     
** \   \  /  \ 
**  \___\/\___\ 
** 
**Device: 
**Purpose:
**Reference: 
**   
*******************************************************************************
**
**  Disclaimer: LIMITED WARRANTY AND DISCLAIMER. These designs are
**              provided to you "as is." Xilinx and its licensors make and you
**              receive no warranties or conditions, express, implied,
**              statutory or otherwise, and Xilinx specifically disclaims any
**              implied warranties of merchantability, noninfringement, or
**              fitness for a particular purpose. Xilinx does not warrant that
**              the functions contained in these designs will meet your
**              requirements, or that the operation of these designs will be
**              uninterrupted or error free, or that defects in the Designs
**              will be corrected. Furthermore, Xilinx does not warrant or
**              make any representations regarding use or the results of the
**              use of the designs in terms of correctness, accuracy,
**              reliability, or otherwise.
**
**              LIMITATION OF LIABILITY. In no event will Xilinx or its
**              licensors be liable for any loss of data, lost profits, cost
**              or procurement of substitute goods or services, or for any
**              special, incidental, consequential, or indirect damages
**              arising from the use or operation of the designs or
**              accompanying documentation, however caused and on any theory
**              of liability. This limitation will apply even if Xilinx
**              has been advised of the possibility of such damage. This
**              limitation shall apply notwithstanding the failure of the
**              essential purpose of any limited remedies herein.
**
*******************************************************************************

Application:  button_led_test
-----------------------------
This application tests the functionality of the pushbuttons labelled (N,E,S,W,C)for North, East, South, West, and Center.  As each pushbutton is pressed the
LED immediately above the switch illuminates.  Pressing the CPU_RESET
pushbutton turns on the ERR2 LED, whereas releasing it extinguishes ERR2 and
turns the ERR1 LED.  As each GPIO DIP switch is turned ON it will illuminate
a corresponding GPIO LED.

   CONFIG Switch Settings:  00010101 

1. Connect the Host PC to the ML506 (J1 header) using a PC-IV or
   Platform USB JTAG cable

2. Connect the Host PC serial port to the ML506 serial port using a null
   modem cable and launch a terminal program on the Host (eg. TeraTerm)
   with the settings: 9600 baud, 8-N-1, No flow control

3. Launch XPS and open the ML506 EDK project (ml506_bsb_system.xmp)

4. Launch a Shell window using XPS menu selection: Project > Launch EDK Shell

5. Download bitstream in shell window by typing: impact -batch etc/download.cmd

6. XPS menu selection: Debug > Launch XMD

7. At XMD% prompt type: cd microblaze_0/code

8. At XMD% prompt type: rst

9. At XMD% prompt type: dow button_led_test.elf

10. At XMD% prompt type: con


Serial Port Output:
-------------------
Button and LED Test