Yup. MAME still has an "electron beam" since that's how all PC video works, just the software buffers a full frame before letting it scan out to the monitor. Ev

Yup. MAME still has an "electron beam" since that's how all PC video works, just the software buffers a full frame before letting it scan out to the monitor. Even if emulators didn't buffer, they would have to somewhat exactly match the speed of the instruction execution of whatever they're emulating (do emulators do this? I have no idea), or else for example the amount of girder rendered in each frame would be different than the real system, i.e, they will be longer in that first frame if the ROM runs faster than the real system (I think... assuming the code is just filling the tiles at its own pace and not tightly scheduled by something else).