Enforced immutability: Difference between revisions

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;D0.B contains either $00 or $80</lang>
 
When the program is being assembled, the assembler dereferences the labels and replaces them in-line with the labeled constants. They cannot be altered at runtime (except with self-modifying code).
The CPU isn't aware that these labels exist, however, as the assembler automatically replaces them with the assigned value.
 
=={{header|8th}}==
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