Thank you both! I will take a look at these URLs and see what I can learn. Fortunately, I know C++ very well. I think I'll start with something synthetic but simple maybe like the existing Grant Searle z80 - gsz80

I am just looking for documentation on writing drivers. PDF or video maybe. Things like: Do you print to the console to help debug. Is there a working step debugging setup I could try. Maybe a walk through? I found something around here about creating space invaders, but it appears it isn't finished...