[Study] Full Stack Vs. Empty Stack

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Stack can be classified into "Full Stack" and "Empty Stack" by addressing mode.

Full Stack : The stack pointer points to the last item in the stack.
Empty Stack : The stack pointer points to the next free space on the stack.

I prefer Empty Stack because... how can I say... It is more computer-like-expression.... :-)
Usually, in computer science, indexing starts like (i=start) and ends like (i<end)... That is, [a, b) range concept is normal...
In Empty Stack, we can say "Stack is empty" by checking (SP == Framebase). And this is more suitable for above concept...