Constraints for router


I need to ensure that two FFs are placed close to each other. Does anybody know if it's possible? Can I use any constraints in my UCF, or any attributes of signals?


Reply to
Tiago Noronha
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Yes you can do that. You can use a relative location constraint, or and area group constraint to do that.

For the details of how to do it, refer to the Xilinx constraint guide. It is included in the ISE distribution. It should be located at: $Xilinx\doc\usenglish\books\docs\cgd\cgd.pdf


John McCaskill

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Reply to
John McCaskill

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