I totally believe you, but this is not the feature set described by the TOC of the book[0], which appears to include virtual memory management and a file system

I totally believe you, but this is not the feature set described by the TOC of the book[0], which appears to include virtual memory management and a file system among much else. [0] https://xinu.cs.purdue.edu/cont.html https://xinu.cs.purdue.edu/cont.html