Recommended · for some experience
Stepping through a program on the 8-bit breadboard computer
Why people recommend it
Ben Eater's breadboard computer video is valued for revealing how code and circuitry interact, and is used as a reference for instruction timing steps.
Watch for: a simple teaching design, not a modern processor
In their words
In Ben Eater's 8 bit computer, there is a separate T-state for PC increment, but 8085 is far more advanced I suppose.
Aravindh Vasu on electronics.stackexchange.com, Aug 2019. CC BY-SA.