> b) Will show me a actual PCB and derive its schematic from it. So, not quite what you're asking for, but Have a read of this: http://research.cs.tamu.edu/pr

> b) Will show me a actual PCB and derive its schematic from it. So, not quite what you're asking for, but Have a read of this: http://research.cs.tamu.edu/prism/lectures/mbsd/mbsd_l16.pdf http://research.cs.tamu.edu/prism/lectures/mbsd/mbsd_l16.pdf And watch this video: https://www.youtube.com/watch?v=4dWNP6igNCY https://www.youtube.com/watch?v=4dWNP6igNCY Then look at this circuit diagram and create a memory map for the ram from it. https://github.com/jefftranter/68000/blob/master/TS2/v2/ts2.pdf https://github.com/jefftranter/68000/blob/master/TS2/v2/ts2.... I'm using this example because it's genuinely complex, but simple enough that you should be able to get it. Other people have mentioned the 555, and that's a nice IC to experiement with because they're cheap and simple and versatile and you can see the output easily with any oscilloscope you buy.