Joe,
     Jan-Erik has confirmed that the compiler does save the context info=20
automatically.
Thanks,
rich!

On 7/21/2014 4:47 AM, IVP wrote:
>> Joe,
>>      I believe that in C the compiler automatically does that. If I am
>> wrong about this assumption would someone please let me know?
> Sorry, I don't do C myself so can't answer that. I'd be surprised
> if it did because it adds instruction cycles to an ISR that may be
> or definitely are not needed. That is, some ISRs are required to
> be as short and/or reactive as possible
>
> Joe

--=20
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