Python CPU Simulator

A small CPU simulation written in Python to explore how processors coordinate registers, instructions, memory, and cache behavior.

Features

• Nine simulated CPU registers
• Program/instruction counter
• File-based instruction input
• File-based memory initialization
• Simulated memory bus
• Cache layer with enable, disable, and flush operations
• Instruction parsing and execution

Supported Instructions

Instruction	Purpose
ADD	Add values from two registers and store the result
ADDI	Add an immediate value to a register value
J	Change the instruction/program counter
CACHE	Toggle or flush the simulated cache

Project Structure

The simulator separates processor, memory, and cache responsibilities into individual Python modules. main.py initializes memory from input files and sends instructions to the CPU for parsing and execution.

Running the Simulator

python main.py

The simulator reads its initial data and instruction stream from:

data_input.txt
instruction_input.txt

What This Project Demonstrates

This project demonstrates object-oriented Python, state management, file I/O, instruction parsing, and foundational computer-architecture concepts such as registers, memory access, caches, and processor control flow.

Author

Matthew Tedesco