MyOS - A Simple Operating System

A minimal operating system written from scratch, currently featuring a basic terminal with keyboard input and screen output capabilities. This project is a learning exercise in operating system development and will be expanded with more features over time.

🚀 Current Features

• Basic Terminal
  • Text input/output support
  • Keyboard input handling (US QWERTY layout)
  • Screen clearing functionality
  • Basic text display with white-on-black color scheme
  • Support for special characters and basic keyboard input

🎯 Planned Features

Short Term

• [✅] Color support for terminal
• Cursor movement (arrow keys)
• Command history
• Basic command parser
• Text editing capabilities

Medium Term

• Basic file system
• Process management
• Simple shell with basic commands
• Memory management
• Device drivers

🛠️ Technical Details

Boot Process

• Uses GRUB as the bootloader
• Implements Multiboot specification
• Written in C and x86 Assembly
• 32-bit protected mode

Memory Layout

• VGA text mode at 0xB8000
• 80x25 character display
• 16KB kernel stack
• Basic memory management

Building and Running

Prerequisites

• GCC (with 32-bit support)
• NASM (Netwide Assembler)
• GRUB
• QEMU (for testing)

Build Instructions

This is tested on Ubuntu 24.04 LTS

Make sure you install necessary libraries

sudo apt update

sudo apt-get install build-essential nasm qemu-system-i386 grub-pc-bin mtools

# Clone the repository
git clone https://github.com/usama3627/myos.git
cd myos

make run

📁 Project Structure

myos/
├── kernel/
│   ├── kernel.h        # Main header file with function declarations
│   ├── main.c          # Main kernel entry point
│   ├── screen.c        # Screen and VGA management functions
│   ├── input.c         # Keyboard input handling
│   └── utils.c         # Utility functions (string manipulation, etc.)
├── loader.s            # Assembly bootloader
├── link.ld             # Linker script
├── grub.cfg            # GRUB configuration
├── Makefile            # Build system
└── README.md           # This file

🤝 Contributing

Contributions are welcome! If you'd like to contribute:

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

📄 License

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

👤 Author

Usama3627

• GitHub: @Usama3627

🙏 Acknowledgments

• GRUB for the bootloader
• OSDev community for their excellent documentation
• All contributors who help improve this project

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