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Cortex M4 MQX uses "cpsid.n i" instruction - what is the ".n"?

Question asked by Ian Wilson on May 18, 2016
Latest reply on May 19, 2016 by Daniel Chen

Hi all,

 

The file mqx\source\psp\cortex_m\core\M4\dispatch.S uses both:

  cpsid i

and

   cpsid.n i

instructions.

I have looked but can't see any documentation on what the ".n" suffix does.

 

Sorry if the answer is buried in an ARM document somewhere.  I did search.

 

Many thanks,

Ian

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