Hello. Yesterday i connected my step motor to GeckoDrive G210 driver. G210 connected to PC through LPT port, common +5v coming from PC PSU.
But motor rotates well only in one direction. In other direction motor rotation is very unstable and it stalls.

If i connect G201 instead of G210 - everything works well. Is my G210 broken? It seems like G210 has wrong understanding of DIR signal