🏗️ 8-Bit Breadboard Computer

🧠 About

This project is my attempt to explore how computers work fundamentally at the gate level.
I aim to design and build a fully functional 8-bit CPU from scratch.

🎯My Approach:

Before simulation, each module is designed conceptually using hand-drawn block diagrams and written reasoning to validate the logic flow through mental simulation and small example cases. The block diagram is then refined into a rough structural, gate-level representation before being implemented, debugged, and rigorously tested in digital logic simulators such as Logisim Evolution and Falstad. Where possible, I explore multiple design approaches to achieve the same functionality, comparing behavior, complexity, and design trade-offs before finalizing an implementation.

✅ Modules Validated

• Clock Module
• Registers
• Bus System
• ALU
• RAM
• Address Decode Logic
• Manually Programmable RAM
• Programmable_RAM_Stored Program Execution
• Program Counter
• Programmable ROM - Hex Display
• Programmable ROM - Decimal Display
• System Integration
• Stored Micro-Program Control

_{💾 Programmable ROM}

🔍 Module in Development and Testing phase

• Fetch Decode Execute Control

🐞 Module in Debugging Phase

• ALU Gate Implementation

📂 Project Structure

Each module will have its own folder containing:

• A dedicated README.md explaining design, features, and usage
• Images of schematics, simulations, and hardware builds

🎯 Goals

• Understand computation from the ground up
• Document the full design and build process
• Share schematics, notes, and experiments for others to learn from

🧩HDL Implementation (Upcoming Version)

• Translating all modules into Verilog and eventually implementing the entire machine.