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ModuOS Wiki

Welcome to the ModuOS documentation wiki! ModuOS is a hobby 64-bit operating system written in C and x86-64 assembly, designed for learning operating system development and experimentation.

📚 Documentation Sections

Getting Started

• Introduction - Overview of ModuOS and its goals
• Quick Start Guide - Get up and running in minutes
• Building ModuOS - Detailed build instructions
• Running & Testing - How to run and test the OS

Architecture & Design

• System Architecture - High-level system design
• Boot Process - From GRUB to kernel entry
• Memory Management - Physical memory, paging, and heap
• Process Management - Multitasking and scheduling
• Interrupt Handling - IDT, IRQs, and exception handling
• System Calls - Syscall interface and implementation

Subsystems

• File Systems - FAT32, ISO9660, MDFS, and VFS layer
• MDFS (ModularFS) - Native filesystem - See MDFS subfolder for detailed docs
  • Overview
  • ACL Permissions - NTFS-like access control
  • How to Replicate
• Device Drivers - Hardware abstraction and drivers
• Storage Drivers - ATA, ATAPI, AHCI/SATA
• Graphics System - VGA text mode and SQRM framebuffer GPU drivers (QXL/VMSVGA/MD-VGA)
• Input System - PS/2 keyboard and mouse
• PCI Subsystem - Device enumeration and management

Development

• Project Structure - Code organization
• Coding Standards - Style guide and conventions
• Debugging Guide - Tools and techniques
• Contributing - How to contribute to ModuOS

User Guide

• Shell Commands - Built-in and userland commands
• Applications - Available applications
• SQR / SQRM / SQRL Formats - What .sqr/.sqrm/.sqrl mean (SQRELF)
• Games - Built-in games documentation

API Reference

• Kernel API - Internal kernel functions
• Driver API - Driver development interface
• Syscall Reference - User-space system calls
• Filesystem API - FS operations

🔗 Quick Links

• GitHub Repository
• Issue Tracker
• OSDev Wiki - General OS development resources

📝 License

ModuOS is licensed under GNU General Public License v2.0. See LICENSE for details.

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