Chroma

The Chromatic OS

About

Chroma is an x86_64 kernel, soon to be Operating System.
It uses the bootboot bootloader.

Features

It can currently:

• read keyboard input
• draw to the screen, including text and basic images.
• output audio over the PC Speaker
• manage physical memory
• manage virtual memory
• switch to ring 3
• switch tasks
• schedule tasks
• handle processes and threads
• handle mouse input
• display a basic 3D object
• display a basic 3D world
• display a basic 3D world in VR

Once we reach this point... well, the world is our oyster.

Building

Chroma can be built on Windows or Linux.

Windows

I (Curle) use Windows for developing Chroma.
Simply have an x86_64-elf-gcc and ld (included!) in your PATH, and run setup.bat.
You will need to use WSL to generate the iso; copy the created kernel.elf file to iso/boot/ as initrd, and run grub-mkrescue -o chroma.iso iso/.
A new system is in the works for creating this ISO natively on Windows.

The generated ISO works in QEMU, or on a physical test device (unlike a lot of other hobby OSes!)

Linux

The system for linux is a lot easier, but you do need an x86_64-elf-gcc cross compiler. You can get one from the AUR on Arch-based distros (like Manjaro), or make one yourself using the OSDev Wiki guide
Simply run the init.sh to generate a makefile, then make to create the kernel.elf file.
Same thing applies as Windows now - copy the kernel.elf file to iso/boot/ as initrd and run grub-mkrescue -o chroma.iso iso/.