An operating system kernel and coreutils, implemented in C for simulated hardware. Written for CS415 "Operating Systems" in Fall 2016, taught by Phil Kearns.

The project is ultimately based on NACHOS, an operating system framework for a simulated PC.

We implemented:

• a filesystem
• interrupt handling
• support to run programs in userspace
  • virtual memory and isolation for the userspace program
  • a syscall interface for kernel interaction from userspace
  • userspace at-will heap allocation
  • I/O stuff
• a few userspace coreutils (mostly to test the above)
• a synchronized multithreading API
• copy-on-write for virtual memory

From @qguv:

I consider myself extremely lucky to have been able to take this class. Five years later, this toy OS is still one of my all-time favorite projects. My sincere thanks to Kearns and my teammates <3