Issues with Generic-Mapped package

Proposal Details

• Who Updates:
• Date Proposed:2016-09-15
• Date Last Updated:
• Priority:
• Complexity:Low
• Focus:

Current Situation

This code looks valid according to the LRM but doesn't make sense:

package pkg1 is
 generic (c : natural)
 generic map (c => c)
end pkg1;

Requirement

Implementation details

Code Examples

Use Cases

Arguments FOR

Arguments AGAINST

General Comments

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Comments

Yes I thought this odd and so delved a bit further. This is apparently called a generic-mapped package and I quote from Peter Ashenden's "The Designer's Guide To VHDL":

"While VHDL allows us to write a generic-mapped package explicitly, we would not normally do so. Rather the feature is included in the language as a definitional aid.

....

Since generic-mapped packages are not a feature intended for regular use, we won't dwell on them further."

So not much of clue here!

-- Brent Hayhoe - 2016-09-15