Just like the Quadra Track jeeps in the 70sTypically yes. But I've had several dentside bronco's (78/79), that had factory "AWD", that could also be "4WD". It had a NP 203 TC, and had 5 positions on it's TC lever. Zero electronics back then. It had no locking hubs and no 2WD option.
Basically, the center diff could be locked (or not), in either high or low range.