Unconstrained I/O when using design partitions

[VCham]

Hello I am doing late floorplanning and have started with setting up design partitions. 

To start I have a single partition set to post-fit.

My issue is that upon compilation, I get a ton of unconstrained i/o from the new partition. What is the correct way to constrain these i/o? I'm only familiar with constraining top level i/o

[sstrell]

Can you explain what is complete in your design?  When you say I/O, those are usually top-level, so it's not clear what you mean by unconstrained I/O that are not top-level.

[VCham]

Before attempting partitioning, my design was fully complete. There were zero unconstrained I/O. Timing was being met.

When I added a design partition, the TimeQuest Analyzer reported 46 unconstrained output ports. Looking at the signals they are just an avalon memory mapped address bus that is an input to the partition. I am not sure why it's being called out as unconstrained. 

[AqidAyman_Intel]

Hi Valentina,

What device is you using and which edition of Quartus?

Regards,

Aqid

[VCham]

Quartus II Standard 17.0.2

Cyclone V

[sstrell]

So your design was complete and you simply set part of it as a design partition, recompiled, and got this?  Can you show your design partition settings/assignments?  For some reason, the connections from your design partition to the root partition of your design are missing.  Simply setting an entity as a design partition should not cause this to happen.  You're not using virtual pin assignments, are you?

[VCham]

Since my last post I've tried the autopartitioner to help with different issues. But I'm still getting the same unconstrained paths.

These are the current partition settings. I am not using any virtual pins.

[AqidAyman_Intel]

Hi,

Can you try the steps to size and and place regions after compilation as in Best Practices for Incremental Compilation Partitions and Floorplan Assignments page 15-45?

[AqidAyman_Intel]

Hi Valentina,

Any updates on the status from your side? Does it resolve your issue?

Regards,

Aqid

[AqidAyman_Intel]

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