Managing Hierarchy in Vivado

• Discuss the concept of hieararchy. You manage hierarchy directly in your design files (instancing modules)
• When you add files to Vivado using the “add file” command (link to tutorial), the Vivado design suite will analyze the design and try to recognize the hierarchy.
• If you correctly implemented hierarchy in yoru design files, you will see this hierarchy in the design file browser window (give a screen shot of this).
• If you incorrectly implemented hierachy in your design files, you won't see hierarchy in your design file browser window. (give a screen shot). Instead, you will see a missing file and a second file (referring to the screen shot).
• Discuss the things that cause the hierarchy to be incorrect:
  • There is a mismatch between the module you are instancing in your top-level verilog and the actual module you are trying to instance: difference between name of module, different name of port, different size of ports.
  • How to cause the design to reanaluyze? (update_command? save file command?)
• How to change “top-level” (for synthesis, simulation, etc.)

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