So, what happens in a real part if there is a stack underflow???

It's not too hard to write a dud piece of code that calls a
subroutine but for some reason never comes back.  One method of
writing such evil and dastardly code is to put a GOTO inside a
subroutine that points outside the subroutine.  The code never
executes the RETURN or RETLW statement.  (Don't ever try this at
home.)


In a simulator, this will eventually give you an error message.  Call
such a subroutine 8 times and you've exceeded the eight level stack
in a PIC.    What happens in the real part?  Does it reboot?  Does it
go off into LaLa land and begin executing uninitialized code?  Does
it chug merrily along?  Does it ignite a global  epedemic of Purple
Plague?



Best Regards,

Lawrence Lile