tinyOS

A small kernel to understand low-level concepts (work in progress).

What does it do?

The kernel contains the following features:

• It is loaded via GRUB legacy;
• It maps the first 3MB of memory;
• It manages paging (+ segmentation);
• It configures software and hardware interrupts;
• It sets up the keyboard for input;
• It writes some data to COM1 serial port;
• It logs what it's doing to the screen.

Building

This code requires bochs or qemu as emulator(s).

• cd ~/path/to/repo
• make
• make run for qemu or make run-bochs for bochs

References

• http://www.jamesmolloy.co.uk/tutorial_html/
• https://littleosbook.github.io/
• https://github.com/mgadda/littleos
• https://github.com/MayankMurali/Creating-a-Little-Operating-System