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This is on my to do list of things to learn but I also don't know yet the purpose other than it being your own. Maybe security since most of what I work with is on top of the OS eg. programming languages. Maybe for RTOS applications at any rate this and OS Dev good resources.

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I find this kind of thing most useful for microcontrollers and real-time embedded systems that don't require full networking. I've used many of these concepts but maybe not all at once on what many would call "bare metal" systems with no OS. Audio gizmos like cheap synths, LED nodes, things you want booting really fast with well-bounded functionality. An OS can get in the way with this kind of system if all you really need is some timers and simple I/O. You may still want a primitive scheduler, sane interrupt dispatching, and filesystems.

Interesting. Yeah for me it's like RISCV, at the end of the day if it runs windows/Linux do I care what's underneath. I gotta get there to know why it matters. Other than the challenge of doing it.

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