> a short book would either skip a lot of topics or be very shallow in the specifics and the specifics is very much at the core of coding an OS I'm ok with tha

> a short book would either skip a lot of topics or be very shallow in the specifics and the specifics is very much at the core of coding an OS I'm ok with that! I'm not planning to write an OS, just want to have a programmer's mental model of how an OS works.