I think that is something else entirely, unless you consider that to be the expensive writing version. Adding a little capability (in this case permitting fine

I think that is something else entirely, unless you consider that to be the expensive writing version. Adding a little capability (in this case permitting finer stepping) and letting software guys figure it out was often the way to great new abilities. I often think about tiny little changes to old hardware that would have been an insignificant cost but added great functionality. Like a 4 bit latch xored with the rgbi output of CGA would have enabled a huge gain in what colour options were available. It would only be a few gates. You would still only have 320x200 in four colours but the colours available wouldn't melt your eyes.