The Nekosys OS

nekosys is an x86 operating system written from scratch

Build System

nekosys uses the custom NekoMake build system

Disk layout

• Sector 0: MBR and boot.asm stage one loader: Loads Stage 2 so that we can use more than 512 bytes
• Sector 1+: loader.asm stage two loader: Parses the FAT, loads the kernel into memory and executes it
• The kernel is in a file called koneko.bin on the disk

The disk must be formatted with FAT-16. Neko's nkimg is a very useful tool for this job.

Memory layout

A map for nekosys' memory layout can be found at memory.md

Features

• x86 (32-bit) kernel
• pre-emptive multithreading
• FAT-16 file system (vfs)
• protected userspace
• sometimes posix compliant
• vesa hi-res graphics support
• ...

Libraries

• libc: Basic C functionality such as print, malloc etc.
• libneko: Useful C++ tools library with containers, templates, etc.
• libelf: Parser for ELF executables
• libpng: PNG image loader (lodepng port)
• ...

Userland

• ...

Requirements

• NekoMake
• neko-gcc
• nasm
• nkimg

Building

 $  nkm 

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made by Twometer