CeDOS

Simple x86 operating system written in assembly and C.

Software Requirements

• GNU make
• [https://wiki.osdev.org/GCC_Cross-Compiler](GCC Cross Compiler + matching binutils), tailored for freestanding i686-elf-targets
• Doxygen: If you want to build the documentation
• QEMU: To emulate an x86 system. More specifically, qemu-system-i386, available via apt.

Make commands

Release builds are the default. For debug builds, use make DEBUG=1 [...]. You will need to add DEBUG=1 to all commands, including run, otherwise, the release version is run.

Build

make build

Run (in an emulator)

make run

Clear output directories

make clean

Build documentation:

make docs

Tested build environment versions

2023-03-01

• GCC 12.2.0
• binutils 2.40
• QEMU 4.2.1

Roadmap

[ ] Implement FAT12 support in bootloader [ ] Add FAT12 kernel driver with syscall interface [ ] Allow execution of ELF files by file system path [ ] Implement proper POSIX file interface [ ] Add a basic shell [ ] Add functions for VGA graphics