preciousuwhubetine / operating-system

An operating system built from scratch

My Operating System

This is the code for my operating system, written in C++. It is currently under development, but it already includes support for interrupt handling, multitasking, device drivers, a GUI, and a FAT32 filesystem handler.

Tech Stack

• Assembly Language
• C++

Features

• 1st stage bootloader
• Support for interrupt handling
• Multitasking support
• PCI device detection and device drivers
• Keyboard driver
• IDE driver for handling ATA hard disks
• AHCI driver for handling SATA hard disks
• USB 2.0 EHCI driver
• FAT32 filesystem handler
• Support for some available video (VESA) modes
• Basic GUI
• Displaying a bitmap image on the screen

Requirements

• Windows 10 or Linux
• GCC compiler
• QEMU emulator (optional)
• VirtualBox (optional)

Installation

1. Clone the repository:

git clone https://github.com/preciousbetine/osdev.git

2. Compile the operating system:

cd osdev
make

3. Boot the operating system in QEMU:

qemu-system-x86_64 -kernel mykernel.bin

4. (Optional) Boot the operating system in VirtualBox:

• Create a new virtual machine in VirtualBox.
• Set the operating system to "Other".
• Set the memory size to at least 1024 MB.
• Generate a VMDK and boot the OS by the instructions in this article.
• Start the virtual machine.

Usage

Once the operating system is booted, you can interact with it using the keyboard.

Future Features

• Basic GUI controls (textboxes, list boxes, etc.).
• An application launcher.
• More device drivers.
• A file manager.
• A shell.

Acknowledgements

I would like to thank these sources for their extensive info:

• OSDev Wiki: https://wiki.osdev.org/.
• This youtube playlist.
• Most importantly, this one.

License

This project is MIT licensed.