@neauoire the new UXN core fast implementation takes the PC vector and two stack pointers, one for wst and other for rst. Ram and stacks are globals. For the sdl implementation we can have a new instance of the UXN struct as you say, since the evaluation function takes a struct iirc.
In either case the behavior is the same right? Or am I missing something?
@bd It depends, why are the stacks global? Are they mapped to the ram someplace?