How to Write an Operating System
Some hobby OSes:<p><a href="http://f2.fasm4u.net/hyos.html" rel="nofollow">http://f2.fasm4u.net/hyos.html</a><p><a href="http://softwarewizard.dk/mojo" rel="nofollow">http://softwarewizard.dk/mojo</a><p><a href="http://mikeos.berlios.de" rel="nofollow">http://mikeos.berlios.de</a><p><a href="http://www.ctpp.co.uk/chaos" rel="nofollow">http://www.ctpp.co.uk/chaos</a><p><a href="http://www.returninfinity.com/baremetal.html" rel="nofollow">http://www.returninfinity.com/baremetal.html</a><p><a href="http://mythago.net/enthflux.html" rel="nofollow">http://mythago.net/enthflux.html</a><p>A kernel development tutorial:<p><a href="http://www.jamesmolloy.co.uk/tutorial_html/index.html" rel="nofollow">http://www.jamesmolloy.co.uk/tutorial_html/index.html</a>