Quote
Yellobello
...not even the TMC2xxx drivers have real 256 microsteps, they take 16 Microsteps and interpolate them internally and
drive the Motors with 256 Microsteps.
All the commonly-used Trinamic drivers can do genuine x256 microstepping - or any other binary microstepping between x1 and x256. But they also offer the ability to interpolate to x256 - in some models only from x16, in other models from any lower microstepping.