Forum Discussion
ContributorSignalTap -> Data Depth set to 0 -> when useful?
Hi All,
Hi,
When sample depth 0 is selected, no ram is needed. In that case, STP becomes a simple logical condition test tool. The waveform viewer still tells you whether condition is met or not, instead of drawing waveforms.
Best Regards,
Sheng
p/s: If any answer from community or Intel support are helpful, please feel free to mark as solution and give Kudos.
10 Replies
ShengN_alteraSuper Contributor
Hi,
When sample depth 0 is selected, no ram is needed. In that case, STP becomes a simple logical condition test tool. The waveform viewer still tells you whether condition is met or not, instead of drawing waveforms.
Best Regards,
Sheng
p/s: If any answer from community or Intel support are helpful, please feel free to mark as solution and give Kudos.
amildmOK, so a waveform will not be drawing .... So, how to know that the condition has been met? Should I see some message in the Data Tab instead of waves?
Vic3DexeOccasional Contributor
Sample depth? Hmm.. Never paid attention.
Now I'm curios too )
What exactly signaltap shows when sample depth = 0? I can't check it right now myself.
- amildm
- Vic3Dexe
Yes, I get it.
I'm asking what is the actual picture when you press "run analysis"?
- amildm
With Data Depth of 0 it seems nothing is captured.... So the question was when the Data Depth is actually useful (if ever)?
- Vic3Dexe
As I thought.
IMO this option is useless (0 samples = no data). Just another bug in quartus.
sstrellI've never used it, but I presume the logic analyzer would still trigger and stop running. You just wouldn't see any data on the Data tab.
- amildm
The question was to
- sstrell
Not sure what you mean. It seems like this is how it would work based on what Sheng says.
