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joe306
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Registered: ‎12-07-2018

Placement Constraints

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Hello, I am going through UG945 Vivado Design Tutorial and I am on Lab 2. I am not familiar with Physical Constraints and was wondering if someone can help me find information/documentation on IS_BEL_FIXED and IS_LOC_FIXED?

Thank you

Joe

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maps-mpls
Mentor
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Registered: ‎06-20-2017

BEL is basic element, LOC is location.  IS_BEL_FIXED and IS_LOC_FIXED are properties of the relevant item in the design database.  In general you won't need to mess with these properties unless you're doing dynamic function exchange/partial reconfiguration or advanced implementation techniques.  It is good to know but I have done many projects without directly having to muck with either of those two properties.  And in general you don't want to go out of your way to toy with these because it is a time sap, and you may end up spending more time hurting your design.

Focus more on lab 1 at this stage of your learning is my advice.

*** Destination: Rapid design and development cycles *** Unappreciated answers get deleted, unappreciative OPs get put on ignored list ***

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maps-mpls
Mentor
Mentor
288 Views
Registered: ‎06-20-2017

BEL is basic element, LOC is location.  IS_BEL_FIXED and IS_LOC_FIXED are properties of the relevant item in the design database.  In general you won't need to mess with these properties unless you're doing dynamic function exchange/partial reconfiguration or advanced implementation techniques.  It is good to know but I have done many projects without directly having to muck with either of those two properties.  And in general you don't want to go out of your way to toy with these because it is a time sap, and you may end up spending more time hurting your design.

Focus more on lab 1 at this stage of your learning is my advice.

*** Destination: Rapid design and development cycles *** Unappreciated answers get deleted, unappreciative OPs get put on ignored list ***

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joe306
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Scholar
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Registered: ‎12-07-2018

Thank you very much

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maps-mpls
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Mentor
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Registered: ‎06-20-2017

You are welcome.

*** Destination: Rapid design and development cycles *** Unappreciated answers get deleted, unappreciative OPs get put on ignored list ***
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