CalmOS

About The Project

CalmOS is a toy operating system created during an Ensimag project. It is minimal and designed only for x86 32bit (IA32) architecture.

Built With

• Make
• GCC
• Qemu
• Love and Calm

Features

• Priority based scheduler
• Message queue synchronization
• Dynamic stack allocation
• User-space protection
• Basic shell
• FAT16 filesystem
• Floppy disk drive
  • 1.44MB disk read/write
• Mouse support
  • Click to paint on screen
• PC Speaker music
  • Custom Music files player
    • play imperial.mbp
  • Keyboard synthesizer
    • Toggle with Ctrl+P

Getting Started

Prerequisites

• Make
• GCC 9+
• qemu-system-i386
• udisksctl (for floppy disk)

Installation

1. Clone the repo

   git clone https://github.com/CalmSystem/CalmOS.git

2. Compile system and user-space

   make build

3. Compile floppy disk image

   make all

Usage

• Start with floppy disk

  make run-now

• Start without disk

  make run-raw

• Compile and start

  make now

Contributors

Code template created by Ensimag teachers (Gregory Mounie et al.)

Features implemented by 3 students during a 3 weeks project.

Resources

• EnsiWiki: Project official documentation (FR)
• OSDev.org: Awesome wiki about OS development

License

Distributed under the GPLv3 License. See LICENSE for more information.