FPGAWeek12Exercise

• Download the Frequency Counter and Frequency Generator reference designs from http://www.xilinx.com/products/boards/s3estarter\/reference_designs.htm
• Download the Picoblaze processor core from http://www.xilinx.com/products/ipcenter/picoblaze-S3-V2-Pro.htm
• Unzip these projects & picoblaze source to your ~/Projects directory (or appropriatlely)
• Implementing the projects directly
  • Each project comes with a .bit file that you can use to program the FPGA starter kit with. Use impact to program the chip.
  • On Windows, you can run the install batch scripts to run impact automatically
• Implementing the projects through ISE
  • Implementing the frequency counter
    • In the frequency counter folder, there is a pdf. It is the readme for the project. It will be your friend - it details how to quickly run the project, setup the ISE project, design details for the hardware and picoblaze software, and some more project ideas.
    • In ISE, create a new design called "s3e_ref_freq_count" in your ~/Projects directory.
    • Add the existing .vhd and .ucf sources from the frequency counter reference design folder that you unzipped
    • Add the existing .vhd source for kcpsm3.vhd from the picoblaze VHDL source folder
    • A portion of the design uses a undocumented mode of operation for the S3E DCM. Instructions for enabling this can be found in the dcm_fixed_osc.vhd file. They are excerpted as follows:
      • This design is for SPARTAN-3E devices only. Special set up required to process this design with ISE tools.
      • On Windows: Set an environment variable called XIL_TEST_ARCS - My_computer -> properties -> advanced -> Environment variables System variables -> New -> XIL_TEST_ARCS with value = 1 - Make sure the Xilinx tools are closed and opened again before using.
    • Once the variable has been set, close ISE and restart it.
    • Select the top level module, and take it through the implementation process - synthesis, place and route, generate programming file.
    • Use impact to program the .bit file to the FPGA! It should
  • Implementing the frequency generator
    • In the frequency generator folder, there is a pdf. It is the readme for the project. It will be your friend - it details how to quickly run the project, setup the ISE project, design details for the hardware and picoblaze software, and some more project ideas.
    • In ISE, create a new design called "s3e_ref_freq_ref" in your ~/Projects directory.
    • Add the existing .vhd and .ucf sources from the frequency ref reference design folder that you unzipped
    • Add the existing .vhd source for kcpsm3.vhd from the picoblaze VHDL source folder
    • A portion of the design uses a undocumented mode of operation for the S3E DCM. Instructions for enabling this can be found on page 13 of the Frequency generator documentation.
    • Afer this is done, you should be able to implement this design and program the FPGA with impact.
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