CPU Emulator in Go

This is a simple CPU emulator written in Go.
It supports basic operations like LOAD, ADD, SUB, STORE, JUMP, and HALT.

🧠 How a real CPU works:

At a high level, a CPU performs operations through the fetch-decode-execute cycle. This is the core mechanism behind most CPUs:

• Fetch: The CPU fetches an instruction from memory.
• Decode: It decodes the instruction to understand what operation it needs to perform.
• Execute: It performs the operation, such as an arithmetic operation, moving data, or jumping to another part of the program.

Registers and memory play a key role in this process:

• Registers: Small, fast storage locations inside the CPU that hold data and addresses.
• Memory: The larger, slower storage for the program’s data (RAM).

In a real CPU, operations like ADD, SUB, LOAD, JUMP, and HALT are often controlled by the Control Unit (CU) and Arithmetic Logic Unit (ALU).

📂 Project Structure

• main.go — Entry point of the application
• cpu_emulator/ — Contains CPU logic (structs, instructions, memory management)

🛠 Features

• Simple CPU with 4 registers and 256 bytes of memory
• Basic instruction set:
  • LOAD
  • ADD
  • SUB
  • STORE
  • JUMP
  • HALT
• Program Counter (pc) and Running State (running) management
• Easy to extend with more instructions!

🚀 How to Run

First, clone the repo:

git clone https://github.com/manoj2994/tiny_cpu_emulator
cd <repo>
go run main.go

LICENSE

This project is licensed under the MIT License — see the LICENSE file for details.