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Altera_Forum's avatar
Altera_Forum
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15 years ago

do SignalTap modules have to be instantiated at the top level of a design

I want to add a SignalTap module I generated with the MegaWizard to my design. Does the SignalTap module have to be instantiated at the top level of the design or can I instantiate it in a lower leve...
Altera_Forum's avatar
Altera_Forum
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11 years ago

It seems that the original question was never answered - because I have the same question, and find no answer here.

I have instantiated a SignalTap-II in one of my modules. Every thing seems OK, except the "SignalTap II Logic Analyzer" can not find it. The two messages I have to choose from are "Invalid SOF" and "JTAG Communication Error"

Neither error is enlightening, and of all the documentation read, this post is the closest to an answer. (And as I noticed, it doesn't answer).

Any clues? How do I get the Logic Analyzer (sp) to see the instantiated SignalTap? It shows up in the hierarchy and all that, I just can't connect to it.

And to turn off any "why don't you do it the silly hard way with the buggy GUI?" questions, yes, there is a reason why I want/need to instantiate the SignalTap megafunction in user code.