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Does it make sense to keep converting an address to a std_logic_vector when it really is an unsigned representation of a number?
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Personally I would say yes - signed / unsigned are only high level human interpretations of the binary number. In most applications signed / unsigned doesn't really matter - it doesn't change what the value means but it does interfere when you want to interface to std_logic_vector.
Why add an unnecessary constraint onto the data type?
Sure use signed / unsigned but only when it's absolutely imperative that you capture the signed / unsigned nature of the signal and I've found that this is very rarely.
Honored Contributor
