Zilog Z80 Homebrew
http://www.malinov.com/Home/sergeys-projects/zeta-sbc-v2

Dr. Scott M. Baker
Building a Zeta 2 Single Board Computer
https://youtube.com/watch?v=wos_AmfgrrU
Z80 Retrocomputing 16 - UNIX on RC2014 
https://youtube.com/watch?v=1WG8zopGzaA