MuP21 stack under/overflow

[kauler@xxxxxxxxxxxxx (Barry Kauler)]

Hi you guys,
I bought into this MISC newslist fairly recently.
I've got Dr Ting's MuP21 development board.
I've got the MuP21 Programming Manual, but it doesn't
tell me how the stack works -- I mean, does it rotate
around the ends?
If I POP one time too many, what do I get?
A simple question, maybe somebody would be so kind as
to illuminate me.
Regards,
Barry Kauler
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