I don't know, but
this might help... If you have devg-tnt.so already present, which you may. I think it's installed along with all the other 'standard' drivers. But I could be wrong. It's been a very long time since I used QNX RtP.
[Edit] I think I've found what you're looking for,
here. Scroll down and you'll find devg-tnt.so and its readme.
