Therein lies my dilemma, those chips are great but they are processed on tiny nodes, often 90nm or smaller.
I know that my obsession with feature size may seem irrational and it probably is but it is just one of those quirks I am having to work around.
Luckily we are not talking about a commercial ...

Thanks to all of you for your incredibly nice and in depth responses :D . I apologize for my unclear initial post, I shouldn't have mentioned any specifics (Like banking) as that just shows how confused I was and might have confused some readers. :|

Whilst your explanation did clarify this, seeing ...

Hi, I don't know much about this sort of thing, but I have been looking for a system that runs on a die that is of a larger process like the 65c816 (0.6um) which is for long long long term stability purposes.
I wonder, I have heard that using it's full 16mb potential one would have to use bank ...