Re: [cc65] How to force a read from a memory mapped register w/o volatile

Hi Dave,

> "A volatile declaration may be used to describe an object
> corresponding to a memory-mapped input/output port or an object
> accessed by an asynchronously interrupting function. Actions on
> objects so declared shall not be ‘‘optimized out’’ by an
> implementation or reordered except as permitted by the rules for
> evaluating expressions."

I wasn't aware of that note - thanks for pointing out !

Regards,
Oliver
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