Thank you! I will have to check out the more complex Pic's.

On 8/22/2014 3:05 PM, Bob Ammerman wrote:
>> As I recall, the Z80 had two sets of registers which allowed for a singl=
e
> cycle
>> context switch without interrupt handling overhead. I am not aware of
>> anyone using it.
> I use(d) it all the time! I've seen it other places too.
>
>> I wonder if any of the current micro's have that type of architecture
>> now days.
> Many PICs have a subset of this where they have interrupt level copies of
> registers distinct from the task-level codes.
>
> -- Bob Ammerman
> RAm Systems
>
>

--=20
John Ferrell W8CCW
    Julian NC 27283
  It is better to walk alone,
than with a crowd going the wrong direction.
                   --Diane Grant


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