XS40 Tutorial: Onboard micro-controller (8031)

This example will show you how to control the onboard micro-controller (8031) connected to the FPGA. Here is how you generate the bit stream for the FPGA:

  1. Run Xilinx Foundation Project Manager.
  2. Click OK to create a new project.
  3. Type "tut2" for name and browse/select "c:\temp" for directory and click the HDL flow button followed by OK.
  4. Download (wrled.vhd, ctrup.vhd, xs40.vhd, tut2.ucf) into "c:\temp\tut2".
  5. Add the three VHDL files to your project using menu item "Synthesis - Add HDL Source File(s)...".
  6. Click the big "Synthesis" button and select "XS40" for Top Level, "XC4000XL" for Family and "4010XLPC84" for Device, then click Run.
  7. Click the big "Implementation" button, then click Run. When complete, exit Project Manager. You are done!
Now you have to generate the hex file for the micro-controller:
  1. Download main.c into the "c:\temp\tut2".
  2. Compile and link to generate tut2.hex.
Now you have to download the bitstream and hex files onto the XS40 board:
  1. Open a "Command Prompt" terminal and cd to "c:\temp\tut2".
  2. Make sure your XS40 board is powered up and connected to the computer.
  3. Type "xsload tut2.hex tut2.bit" on the prompt and hit "enter". You are done!