This is the Z80 CPU module I demonstrated a few months ago. It is designed to work with the RC2014 bus.
So what makes it special? Well, the module includes a number of extra features and enhancements designed to simplify a system build. These include:
It will work with either the standard RC2014 bus or the latest enhanced bus where all the Z80 CPU signals are available.
It includes several options for generating a signal clock: Crystal, Oscillator or taken from RC2014 back plane.
A reset circuit is included.
And the signals INT, NMI, BUSRQ and WAIT feature 10K pull-up resistors.
The schematic is here:
and you can find it on Tindie here: