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Negated enable for multiplexer #1844

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@cosineblast cosineblast commented Sep 4, 2023

This is an in-progress PR, consisting of an implementation for negated enables for the multiplexer, and eventually for the demultiplexer as well.

As of now, the feature modifies the enable attribute for the multiplexer to add an invert option, which inverts the input for the enable in the component, as well as adding the little indication circle. This new invert option for the enable attribute takes the value id of 'inverted' in the XML.

shot

So, are the designs for the invert enable OK? If that's the case, I will then work on the demultiplexer as well.

Instead of adding a new INVERT_ENABLE to the multiplexer and PlexersLibrary, we add a new attribute to the PlexersLibrary named ENABLE_TYPE. This attribute is intended to replace the enable attribute for plexer components that support inverted enable. Thus, the enable type attribute clashes in ID with the  enable attribute; they are not intended to be used together.
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