MercuryOS

Mercury OS is a simple operating system used to learn about the different concepts of OS design. It is written using C and Assembly and compiled using GCC. The kernel is loaded using GRUB. The objective is to make a lightweight, extensible platform that can run simple applications at high speeds.

Requirements

Installing:

• 32-bit Processor or higher

• 1GB of RAM

Developing:

• GCC configured toolchain

• LD linker

• Nasm

• QEMU or Bochs

Building

Build a tool chain as described by the OSDev wiki: OSDev Wiki.

To get nasm on linux systems use

sudo apt-get install nasm

Windows and MacOS sources and binaries are avaliable at Nasm.

To build use the makefile at the root directory.

Qemu can be used by executing

make run-qemu

Bochs is recommended for debugging and can be used with

make run-bochs

Features

• Bootable image

• Basic terminal output

• GDT implementation

• IRS implementation

• IRQ implementation

• Basic keyboard driver

• Basic Timer

• Refine keyboard driver

• Extend and refine I/O drivers (Centralized Input and Output Function)

• Userland shell

• Filesystem support

• Load ELF Executable