Nullix (WIP)

Null, not UNIX

Features:

• GRUB multiboot ELF boot
• IDT + PIC remap
• IRQ1 keyboard handler (buffered)
• VGA text printing (vga_printf, vga_putc)
• Buffered getchar() that blocks with hlt
• Basic memory management (kmalloc bump allocator)
• No userspace, no paging, no libc

Build & run (requires i686-elf toolchain, nasm, qemu in ./tools):

First, ensure tools are in ./tools/bin (i686-elf-gcc, nasm, qemu-system-i386).

Then set up the environment:

./buildenv.sh

Then build and make an ISO:

make
make mkgrub

If tools are missing, the script will error. For Windows, use Cygwin/MSYS to run the script. You can also download an tools.zip tarball for Windows.