[ Home ] [ Up ] [ Structure ] [ Dataflow ] [ When Else ] [ With Select ] [ Array[ Index] ]
When Else

[ Up ]

4x1 Multiplexer - Concurrent VHDL Code
 
bullet

Your only allowed to assign a value once to a signal.

bullet

However are you allowed to use a when .. else statement in order choose among several sources.

bullet

You must have an else value - otherwise will an error occur.

bullet

This statement useful if the control-bits differs for each assigned value (not the case here)