[ipnon]

Similar teaching operating systems include:

Blog OS, an operating system written in Rust constructed through a series of independent tutorials.[0]

The CS140E embedded operating system.[1] This OS comes from an experimental course taught by Dawson Engler at Standford. The instruction is lab-based with no lectures. The student builds the OS on a Raspberry Pi through the use of primary-source technical references like datasheets and ARM manuals.

[0] https://os.phil-opp.com/ [1] https://github.com/dddrrreee/cs140e-20win/

[monocasa]

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.

[pmiller2]

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.

[monocasa]

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.

[andrekandre]

also, don’t forget about [0] (another rust-based learning mini for risc-v)

[0] http://osblog.stephenmarz.com/