@redefl

@defl will not let you change the value of a label once it is defined. They are immutable.

Though there may be some circumstances you may want to do this. You can use @redefl to achieve this.

Examples

@defl ADDR, $4000
@defl ADDR, $2000 ; Will result in an ERROR!

@echo "Success!"

@defl ADDR, $4000
@redefl ADDR, $2000

@echo "Success!"