I8080 is a bear to work with; it needs two support chips just to get it running, and it uses non-TTL voltages on the data bus. You may want to look for a Z-80 based board - it is binary compatible ...

Over on his blog our hacker [Scott Baker] restores a Prompt 80, which was a development system for the 8-bit Intel 8080 CPU. [Scott] acquired this broken trainer on eBay and then set about restoring ...