The stage0 bootstrap is seriously interesting: https://github.com/oriansj/stage0 https://github.com/oriansj/stage0 It starts with a system without firmware an

The stage0 bootstrap is seriously interesting: https://github.com/oriansj/stage0 https://github.com/oriansj/stage0 It starts with a system without firmware and an OS, just a <=1KB hex monitor that assembles special hex0 programs. In the next stage it bootstraps a more comfortable assembler. Then it uses this assembler to bootstrap a small C compiler written in assembly. And then it uses this C compiler to compile a C compiler written in C. All the way up to gcc.