Haste makes waste

The one thing that seems to stand out in my mind is how the code seems to be thrown together without any regard for long term maintenance (i.e. assembly code isn't wrapped in C, most of the kernel is in x86 assembly code, doesn't seem to be any sort of structural design underpinning the different components, etc.). This is evident by the fact that the author often admits that he had problems remembering what he had done. If an overall design blueprints/metaphors had existed, he wouldn't have had this problem.

I assume that the author decided he would tackle his OS project and then get on with his life. In other words, let's get this done and then never, NEVER, look back (history seems to have verified this: the author wrote the OS in the early 1990s and then left MMURTL at the station with bus fair in the mid 1990s). There was no home-page on the internet, nor promoter outside of SAMs publishing.

MMURTL did not take off. The hundreds of hours that the author spent building tools and wading around in the dark have been, for all intensive purposes, lost. All that remains is a jumbled book, as a testimony to one man's urge to climb a mountain "because it's there."

Had Richard involved other people and Open-Sourced his creation, the man-power necessary to take MMURTL out of its confusing infantile state may have been available. Instead, Richard decided to build MMURTL utilizing a software team consisting of one person, and the rest is history.

Those readers who want to dig into OS internals should defer to Linux. Unlike MMURTL, Linux is a "live" system (which admins actually use) with all the features you would expect in an enterprise OS. Linux has a sane design, does a sufficient job of isolating hardware specifics, and information/support can be located at dozens of web-sites. Best of all, Linus and his cast of thousands have wrapped the assembly code and given it a structural underpinning.

At the end of the day, this book is a nice concept whose execution never really followed through. There may be one or two useful snippets of code, but I wouldn't invest 6 months of my life to become a MMURTL fanatic. History and evolution were the judges and Linux is the winner.

Other Reviews

• What you need to Consider
• I like it!
• Lots of reviewers missing the point
• Not an educational textbook
• Haste makes waste