A monolithic operating system in 512 bytes of x86 machine code
Absolutely mad history here:<p><a href="https://news.ycombinator.com/item?id=20569438" rel="nofollow">https://news.ycombinator.com/item?id=20569438</a> (2019)<p>As a teaser, from the above:<p><i>> For those not aware of the background, the author is a wizard from a secretive underground society of wizards known as the Familia Toledo; he and his family (it is a family) have been designing and building their own computers (and ancillary equipment like reflow ovens) and writing their own operating systems and web browsers for some 40 years now.</i>