TOS is a hobby operating system written in C and assembly (GAS).

If you're looking for the code I've written, most of it is in kernel/arch/i386 and kernel/kernel

The currently implemented features are

• Bringing up the CPU (GDT, IDT)
• Setting up the rest of x86 (PIC, PIT)
• Interrupts
• Basic Keyboard support
• (very) Basic kernel mode shell

The next features up are

• Physical memory manger
• Virtual memory manager
• Fancy visual stuff when I get bored

A GCC cross compiler for i686-elf is required, as well as QEMU or some other way of running an i686 binary.
Building can be done with ./build and simuation with ./qemu (if using QEMU).

The complete process can be found in the resources section.

If you happen to be building on Manjaro (as I am) this is exactly what you need to do:

• get the newest binutils from here: ftp://ftp.gnu.org/gnu/binutils/
• get the newest gcc from here: ftp://ftp.gnu.org/gnu/gcc/
• exstract them both into HOME/src
• Follow these instruction starting at "The Build" : http://wiki.osdev.org/GCC_Cross-Compiler
• install: qemu, xorriso, mtools

These are the resources I used for learning and examples

• OSDev.org wiki, specifically the Meaty Skeleton tutorial was used as the bases for the build system, file layout and very basic libc requirments
• The OS Development Series from brokenthorn.com for most of the knowledge, especially on the CPU bring up
• Bran's Kernel Development Tutorial from www.osdever.net for the interrupt set up and some very repetitive assembly