The "virtual stacks" section and the advice from both of you helped, thanks! I was trying to use this as a graphics data buffer with the NES's VBLANK and NMI, and the tutorials I saw out there... aren't the best about this

So I'm relatively new at this whole "controlling the processor on a miniscule level where you can change things integral to the thing running properly" thing, and have a small question. Tutorials I've found never seem to have any problems with just shoving things into the stack, and I seem to be ...