signal tap: pre-sythesis shall be named post-synthesis

[AEsqu]

Hello,

It is possible to probe signal tap using 

pre-synthesis or post-fitting results from quartus.

This is actually not correct,

if you run compile only, you cannot probe the "pre-synthesis db".

if you run synthesis, then you are able to probe the "pre-synthesis db".

So signal tap: pre-sythesis

shall be named post-synthesis.

[sstrell]

No.  Pre-synthesis refers to signals exactly as they are defined in your HDL code.  You don't need to perform full synthesis to get pre-synthesis signals for Signal Tap.  Just run Analysis & Elaboration, which does not perform any synthesis.  The compiler checks your HDL files and makes the pre-synthesis signals available for assignments like in the Assignment Editor and for tapping in Signal Tap.

[AEsqu]

No. run Analysis & Elaboration and you will see that you cannot probe the signal tap probes (delete the db before and try with a vqm from synplify). Quartus std edition.

[sstrell]

I wasn’t talking about a .vqm, which obviously has been synthesized by another tool. I’m talking about straight HDL code added to a Quartus project.

[AEsqu]

I use a mix of straight verilog/vhdl and one vqm.

The vqm after elaboration shall be normally enough and not require a synthesis either.

Please double check.

[sstrell]

I’m not sure what you’re saying here but a .vqm by its definition is HDL already synthesized in another tool, so by its nature, it’s already post-synthesis. In Quartus to integrate it in a project, yes, you do have to perform synthesis.

[AEsqu]

So by selecting "signal tap: pre-sythesis", I still need to run a synthesis,

as originally posted, correct?

Which is strange to me, as Quartus properly compile and elaborate the RTL + the VQM without problem,

so it shouldn't required a synthesis.

As you stated, VQM is already synthesized, so why having to run the synthesis step again in quartus to include it in the elaborated database? 

[SyafieqS]

Hi Alex,

Any other concern regarding this?

[sstrell]

It's a 3rd-party synthesis result.  It has to get integrated into the project somehow.

[SyafieqS]

Hi Alex,

by definition vqm is already synthesized by third party as mentioned but it need to get integrated with Quartus flow thus a compilation is necessary

[SyafieqS]

Alex,

May I know if there is any update?

[SyafieqS]

No response from the customer after the answer being provided.

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