Yes thanks! I remember all the things I needed to implement before reaching userspace, it's a lot indeed. After that it gets easier because every new change is

Yes thanks! I remember all the things I needed to implement before reaching userspace, it's a lot indeed. After that it gets easier because every new change is motivated by a specific smaller goal like supporting the network card of a new laptop, or adding sounds to the emulator, or adding one more syscall or device file. You get rewarded by new capabilities after each addition.