I've only actually written one in the classic style. I doubt that cycle-accurate is easier in general. It definitely isn't if you count the effort that goes int

I've only actually written one in the classic style. I doubt that cycle-accurate is easier in general. It definitely isn't if you count the effort that goes into discovering the timing information by running experiments on the original hardware. If you start with everything documented, I guess it might be the least effort needed to bridge the gap between 99.5% compatibility and 100%.