This is not new, but I didn’t report it here until now.
Dmitry got Linux running on an 8bit processor, not natively. He created an ARM simulator called uARM that emulates ARM set instructions:
http://dmitry.co/index.php?p=./04.Thoughts/07.%20Linux%20on%208bit
It is tooooooooo sllllloooooowwwwww, but it works at all!
He published the schematic about how to create it using an Atmega1284 and an SIMM module of SDRAM.
Alan C. Assis 