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💻 A 5-stage pipeline MIPS CPU design in Haskell.

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MIPS-Simulator

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A functional MIPS CPU simulator implemented in Haskell.

A year ago, I implemented a RISC-V simulator in C++. I had long dreamed of using a functional programming language to express the circuit of a CPU. But at that time, implementing lazy-evalution in C++ is slow and painful. So the semester in Computer Architecture course, I made this MIPS simulator.

As functional programming language works well in expressing this hardware circuit logic, I'm implementing A MIPS CPU, just by directly translating Haskell into Verilog.

All CPU and CPU simulators I've made are listed below.

Technique Implementation
RISC-V v1 5-stage pipeline simulator C++
RISC-V v2 dynamic scheduling simulator
Tomasulo + Speculation
C++
MIPS 5-stage pipeline simulator Haskell
MIPS 5-stage pipeline CPU Verilog

Usage

Currently I haven't implemented a command-line interface for interacting with this simulator. You can only run tests or hack it yourself for now.

Install Stack and simply run:

stack test

Roadmap

  • Single-Cycle Processor
    • R type
    • I type
    • ALU test
    • Compare and shift
    • Support HI and LO, multiply and division
    • Branch instruction
    • jump and link
    • J type
    • Memory operations
    • unsigned / high addr memory operations
  • Multi-Cycle Processor
    • Data path
    • Stalling
    • Forwarding
    • Branch Prediction
    • Advanced Branch Predictor
    • Hazard Tests

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