CS345 · Computer Architecture of the OS
Tools that show you the work
Nineteen interactive tools covering both halves of the course — HLASM assembly in Weeks 1–7, operating system internals in Weeks 9–15. Each one takes numbers and code you type in and walks through the process one step at a time, the same way you would have to on a quiz or the final.
Nothing is saved, nothing is submitted anywhere, and no sign-in is needed. Use them to practice, then close the tab and try the same problem on paper.