as: Set
7.83 '.set SYMBOL, EXPRESSION'
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Set the value of SYMBOL to EXPRESSION. This changes SYMBOL's value and
type to conform to EXPRESSION. If SYMBOL was flagged as external, it
remains flagged (
Symbol Attributes).
You may '.set' a symbol many times in the same assembly provided that
the values given to the symbol are constants. Values that are based on
expressions involving other symbols are allowed, but some targets may
restrict this to only being done once per assembly. This is because
those targets do not set the addresses of symbols at assembly time, but
rather delay the assignment until a final link is performed. This
allows the linker a chance to change the code in the files, changing the
location of, and the relative distance between, various different
symbols.
If you '.set' a global symbol, the value stored in the object file is
the last value stored into it.
On Z80 'set' is a real instruction, use 'SYMBOL defl EXPRESSION'
instead.
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