There is absolutely no limits to the nostalgia of the ’80s. Semachthemonkey subdued to the romantic attractiveness of reproducing the famous 8 bit Z80 under a project called RC2014.
As there is nothing for which a Pi Zero cannot prove its usefulness, the guys of Semachthemonkey are using one even for the RC2014.
RC2014 is a simple 8 bit Z80 based modular computer. It is inspired by the home built computers of the late 70s and computer revolution of the early 80s. It is not a clone of anything specific, but there are suggestions of the ZX81, UK101, S100, Superboard II and Apple I in here. It nominally has 8K ROM, 32K RAM, runs at 7.3728MHz and communicates over serial at 115,200 baud.
As a bare minimum, you will need a CPU, ROM, RAM, Clock and Input/Output module. The RC2014 is designed in such a way that you can build your own modules to expand it. As such, if you have access to similar components, or have specific needs, you might not need all the items I have on offer.
Read more on their Tindie page at this link