FPOS - Free Pascal Operating System

Project started in 01-01-2010 and coded with ❤️

‼️ Attention :

This project is far from dead, but it requires revision... A new bootloader will be utilized for execution on 64-bit architecture. Additionally, new functionalities will be implemented:

• An integrated file system implementation supporting FAT32, NTFS, ext-versions, and much more.
• Multitasking extension for running many subprograms simultaneously.
• Extendable hardware driver slots for multitasking capability.
• An API for accessing all public kernel functionalities.
• A graphical user interface (possibly as a separate threading application). Many modern features will follow, but please be patient...

Introduction :

FPOS is a operating system consists of a minimal kernel built on FreePascal. It contains a Scheme implementation of a hard drive (ATA) driver, keyboard (PS2), serial (8250 UART), FAT32 filesystem and a small real time clock manager. The project was built to experiment with developement of operating system using a high level functional language to study the developement process and the use of Scheme to build a fairly complex system.

Boot	Shell (CLI)	Command (Help)

🤝 Bugs and help / improvements will be appreciated, please send them to (Yacine REZGUI) [email protected] and (Mario Ray Mahardhika) [email protected].

:heavy_check_mark: Implemented :

• GDT, IDT ( no problem... I hope )
• ISR ( currently, only page fault has additional handler )
• IRQ ( no problem... I hope )
• Console ( including simple command processing )
• Keyboard ( try to be US-std, but I don't know the keymap. Just guessing for now )
• Memory Manager ( needs testing )
• Speaker ( just for fun :-) )
• RTC ( seems wrong at PM, also for DayOfWeek )
• System calls
• Multitasking
• Filesystem ( perhaps FAT12 is the most obvious, or should we create one ourselves? )

🔧 Fixed :

• Successive Write(Ln) fails due to 103 IOResult
• Some inline assembler and assembler routines are missing register list, causing it to crash randomly (please test)

📋 Changed :

• Updated to FPC RTL revision 14499

➕ Added :

• Not 📅 planned for now

📝 Note :

• Some files are not used due to unusability ( multitasking & filesystem )

⚙️ How to compile :

• Make sure you have working FPC installation ( try using latest 2.5.x snapshot if your version fails )
• Copy executables** under tools to a directory listed in your PATH ( or Path )
• Open Command Prompt ( start->run->cmd ), cd to fpos top directory, then type 'make'

⚗️ How to test :

• Adapt (Qemu or Bochs).bat to your Qemu / Bochs installation
• On Linux, you must change 'i386-linux-ld' in make.rules to 'ld'

❤️ Contributing

Contributions, issues and feature requests are welcome!

🙏 Thanks to

• @achief-ws
• @Sio
• @James T. Sprinkle
• @Steve Jenson
• and Other here

📓 License

The GPL-2.0 License. Please see License File for more information.

🌳 Treeware

This Operating System is a Treeware. If you use it in production, then we ask that you buy the world a tree to thank us for our work. By contributing to the Treeware forest you’ll be creating employment for local families and restoring wildlife habitats. Read more about Treeware at treeware.earth