🖥️ More-s-OS

A custom Operating System built from scratch in JavaScript — a deep dive into low-level programming and OS fundamentals.

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🎯 About

More-s-OS is an educational operating system project that explores the fascinating world of low-level programming. Built as a learning journey, this project demonstrates how computers boot up and execute code at the most fundamental level.

This project was inspired by and built following the excellent tutorial by dr Jonas Birch.

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✨ Features

• 🔄 Custom bootloader implementation
• 🧠 Kernel execution flow
• 💾 Memory management fundamentals
• ⚡ Interrupt handling
• 🔧 Low-level hardware interaction

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🚀 Quick Start

Prerequisites

• Linux environment (Ubuntu recommended)
• GCC Toolchain
• QEMU emulator
• GRUB bootloader
• Node.js

Installation

1. Clone the repository

   git clone https://github.com/premmore388/More-s-OS.git
   cd More-s-OS

2. Install dependencies

   npm install

3. Run the OS

   # Instructions for running with QEMU
   qemu-system-x86_64 -drive format=raw,file=boot.bin

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📁 Project Structure

More-s-OS/
├── boot.bin        # Compiled bootloader binary
├── main.js         # Main JavaScript entry point
├── tmp.asm         # Assembly source code
└── package.json    # Node.js dependencies

File	Description
boot.bin	The bootloader binary that initializes the system
main.js	Core JavaScript logic for OS operations
tmp.asm	Low-level Assembly code for hardware interaction
package.json	Project configuration and dependencies

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🎓 What I Learned

Building this OS from scratch taught me:

Concept	Description
Bootloaders	How computers start up and load the kernel
Kernel Execution	The flow from BIOS to running code
Memory Management	Allocating and managing system memory
Interrupts	Handling hardware and software interrupts
Assembly	Writing low-level code for x86 architecture
QEMU & GRUB	Using emulators and bootloaders for development

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🛠️ Tech Stack

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🤝 Contributing

Contributions are welcome! Feel free to:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

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📺 Credits & Resources

• Tutorial: dr Jonas Birch — for the amazing OS development tutorial
• Tools: QEMU, GRUB, GCC Toolchain

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📄 License

This project is open source and available under the MIT License.

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👤 Author

Prem More

• GitHub: @premmore388
• LinkedIn: Connect with me

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⭐ Star this repo if you found it interesting!