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by monocasa 2300 days ago
The nice thing about xv6 is it gets a lot farther to be a full OS. User mode, ELF loader, an ascetic but usable system call table, etc.
1 comments
pmiller2 2300 days ago
If you want an even fuller OS for teaching purposes, early versions of Minix were designed with teaching in mind, and there’s a book to go along with it.
link
monocasa 2300 days ago
Yeah, but they used a much more confusing architecture for early Minix (16-bit protected mode) that I'm of the opinion it obfuscates a lot of the underlying concepts.

And xv6 has a book that goes along with it as well.

link