complementOS

Complement OS - A minimal operating system targeting 32-bit x86 (IA-32) architecture.

Motivation

The main reason behind developing an OS from scratch is to grasp and practice the main concepts behind software, hardware, low-level development, assemblers, compilers, linkers, loaders, and specifically IA-32 architecture.

I believe that reinventing the wheel is beneficial in many aspects.

Roadmap

General

• 32-bit protected mode
• ELF support

Booting

• Custom bootloader (No GRUB)

Drivers

• VGA (25x80)
• PS/2 keyboard
• PS/2 mouse
• Sound card
• Network interface controller

Interrupts

• CPU Exceptions
• IRQs
• Programmable Interval Timer

Memory

• Segmentation
• Virtual memory (with paging)
• Dynamic allocation (malloc)

Multiprocessing

• Processes
• Threads
• Scheduling

Synchronization

• Locks

Misc

• Shell
• System clock
• Custom GUI