struct -> how to add to SignalTap ?

[amildm]

Hi All,

Is it possible to add the struct signals to SignalTap? I did a search for the struct signals in the SignalTap GUI, but nothing was returned...

Thanks!

[amildm]

In my opinion, the SignalTap is built to tap nets, not signals defined in HDL. So, if two signals are assigned to the same net, the Analyze & Elaborate stage will eliminate one without leaving a choice to SignalTap at all...

[sstrell]

That's not what Analyze & Elaborate does.  That first stage of the compiler simply checks all the code and builds the project hierarchy.  No optimization has been performed yet.  When you tap a pre-synthesis signal, the filter is showing what is tappable in the HDL code itself before any optimizations.

[amildm]

In fact, the Analyze & Elaborate stage eliminates (throws out) the signals which drive nothing... So you cannot say there is no an optimization in this stage.

[sstrell]

OK, you got me there

But still, like I said, the filter shows what's tappable in your code.

[RichardTanSY_Altera]

Thank you for acknowledge the solution provided. 

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Richard Tan

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