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jyoti_thatoi
Visitor
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Registered: ‎02-11-2009

Xst:646 - Signal <pc1> is assigned but never used

hi friends,

                         I'm currently working on a project in XST10.1 and facing this type of warning for almost every signal in the structural design. Here is the warning:Xst:646 - Signal <pc1> is assigned but never used. This unconnected signal will be trimmed during the optimization process.

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bassman59
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5,585 Views
Registered: ‎02-25-2008


jyoti_thatoi wrote:

hi friends,

                         I'm currently working on a project in XST10.1 and facing this type of warning for almost every signal in the structural design. Here is the warning:Xst:646 - Signal <pc1> is assigned but never used. This unconnected signal will be trimmed during the optimization process.


Obviously pc1 is not connected to anything. This could be either because you didn't connect it to anything in your design, or the logic it was connected to was optimized away.

 

so look for the first few of these warnings and look in your design to see why the signal isn't being used.

 

-a

----------------------------Yes, I do this for a living.
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