hi,

No!
These both access exactly the same physical memory locations;

Yes, it depends on which register bank is used (=

Again, you are confusing Memory Areas with Addressing Modes.

So why SFRs must be named as different Memory Area? They are just a subclass of the internal RAM.
By the way, I cannot understand the logic by which you recognize different memory areas. What is the difference between SFRs and pure lower 128 bytes internal RAM? Physical realization? Their states after reset/power-up? Whatever?

And the main question: what all these Memory Areas definitions are for? I see this task total useless; at least if we drop Addressing Modes criteria.

Regards,
Oleg