CONSTANT - Declare Symbol Constant
Syntax
constant <label>=<expr> [...,<label>=<expr>]
Description
Creates symbols for use in MPASM assembler expressions. Constants may not be reset after having once been initialized, and the expression must be fully resolvable at the time of the assignment. This is the principal difference between symbols declared as constant and those declared as variable, or created by the set directive. Otherwise, constants and variables may be used interchangeably in expressions.
Example
variable RecLength=64 ; Set Default
; RecLength
constant BufLength=512 ; Init BufLength
. ; RecLength may
. ; be reset later
. ; in RecLength=128
. ;
constant MaxMem=RecLength+BufLength ;CalcMaxMem
See Also
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