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Superscalar Processor Simulator

A superscalar processor simulator written in Java as part of the Advanced Computer Architecture unit.

Features

The simulator has implemented several features that allow programs to be executed super-scalar out of order:

  • Reservation Stations
  • Reorder Buffer with implicit register renaming
  • Operand forwarding/bypassing
  • Multiple execution units
  • Various methods of branch prediction with a branch target address cache (BTAC)

How to run

Ant is used to compile and run the simulator, to compile the project:

ant compile

To run the project:

ant -Dptp=path/to/assembly/file.asm -Di=true -Dwidth=4 -Dbp=2

where -Dptp is the relative filepath of the assembly file, -Di is whether to run the simulator in interactive mode, -Dwidth is the superscalar width and -Dbp is the branch predictor.

-Dbp options:

0 : Fixed Taken

1 : Fixed Not Taken

2 : Static (Backwards Taken, Forwards Not Taken)

3 : Dynamic 1-bit History

4 : Dynamic 3-bit History

All of the assembly files that are guaranteed to work on this simulator are in the simulator/programs/ directory.

The build can be cleaned by running:

ant clean