It’s called the 86Duino and stuffs an old Pentium II-class machine capable of running DOS, Windows, and Linux into the space of an Arduino, The 86Duino Zero features, of course, an x86 ...

[David Hansel] shows us this in style, with a floppy interface, software library, and even a rudimentary DOS, for the humble Arduino Uno. The library provides functions to allow low level work ...