Resolving Macrocell Usage Issues

• Use Multi-Level Synthesis

• Turn OFF Parallel Expanders for all or part of the project

• Use DFFs instead of latches

  • May reduce macrocell fan-in (may reduce macrocell usage)

• Use asynchronous instead of synchronous clear and preset

• Use IOE registers for MAX 9000

  • Turn on Fast I/O

• Try Automatic Register Packing for MAX 9000

• Try custom Fitter Settings

• Consider selecting a larger device

  • Vertical migration allows pinout to be maintained

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