CogOS: A 32 bit Operating System

Features

• PS/2 keyboard support (via 8042 keyboard controller)
• Custom bootloader using BIOS (or CSM in the case of newer CPUs)

Running

1. Install the required tools (sudo apt install nasm gcc qemu-system-x86 make)
2. Create a GCC cross-compiler for the i386-elf target architecture (i486, i586 and i686 work too, but use qemu-system-x86_64 in the Makefile)
3. Set the PREFIX in the Makefile to bin-location/ix86-elf, for example $HOME/opt/cross/bin/i686-elf following the previous tutorial
4. Execute make run

Goals

• Reaching userland (setting up paging, building a page frame allocator, etc.)
• Creating a process scheduler
• Filesystem support (probably FAT12 or FAT32 at first)
• Networking
• Adding mouse support
• Reaching long mode