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Visitor
Visitor
6,468 Views
Registered: ‎02-11-2009

warning:Xst:2677

hi frnds,

again a warning for XST10.1. pls suggest me out:here pag is the main structural code,PROGRAM_REG is the sub-code in behavioral.

 

Xst:2677 - Node <PROGRAM_REG/lc_data_12> of sequential type is unconnected in block <pag>.

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Participant
Participant
6,427 Views
Registered: ‎05-09-2008

Hi,

 

Without posting your code, it's difficult to answer...

 

Regards.

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Explorer
Explorer
2,198 Views
Registered: ‎01-16-2013

Hi,

 

XST:1710,1895:   Warnings are not errors.  They are there to alert you of a potential problem. Synthesizer optimizes your codes and thinks that you have never changed the value of bits of RESERVATION_STATION_1000_LSU. So that it gives you a warning that it will be trimmed. Everytime, check for warnings. It's more challenging than errors and gives you more view about your codes.
 
XST: 2677 - This warning indicates that the sequential signal in the block is unconnected and will be removed. This is a common warning during Synthesis optimization. It does not always indicate a coding error. If the Post-Synthesis/Translate simulation shows the design functions correctly, you can safely ignore this warning.

If this signal is not expected to be unconnected or removed, check if the downstream loads of this signal are correctly connected. To prevent this signal from being removed, add KEEP and S (Save Net Flag) constraints to it. For the syntax of the constraints, please refer to Constraints Guide.
 
Regards,
Vishal
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