What is the difference? :
The truth is more important than the facts.
First uses the "assembler friendly name", the other uses the struct access
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Just to point out that this has nothing in particular to do with PROTECTED_WRITE. As Morten says you have a choice when accessing SFRs. The possible advantage of the C/C++ struts is that because registers are grouped you can often pass around just the base address of a register block.
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