Here is a site showing how to run OS X on a modified Mac 512K. Yes, the Fat Mac.
(My first Mac and it really is to bad that they couldn’t call it a Big Mac.)
The author of the site upgraded the Macintosh 512k to run OS X by replacing the innards with a modern Mac Mini and various supporting components, including a grayscale CRT monitor, an LS-120 floppy disk drive, and a microcontroller-based USB device that interfaces the Mini to the original keyboard and mouse.
He says he did it because he wanted to experiment with creating a custom USB device. Of course, it is not a real useful computer, but it is an interesting experiment.
But if you do it be CAREFUL!!!
See it here.
