A3.1i/F3.1i Implementation Tools:
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Hot Solutions
Solution 9344: 3.1i Virtex Map - IOB register packing does not handle all cases that 2.1i did.
Solution 9250: 3.1i Virtex PAR - PAR may run out if memory during Initial Timing Analysis.
Solution 8937: 3.1i Virtex PAR - PWR/GND routing may hang or run very slowly.
Solution 9359: 3.1i Virtex PAR - Illegal pin swaps may occur on SRL16E.
Solution 8909: 3.1i Virtex PAR - New NET constraint USELOWSKEWKINES is available to force usage of backbone routing..
Solution 9300: 3.1i Virtex PAR - New placer DRC check causes design with asyncrhronous LVDS outputs to fail.
Most Requested Solutions
Solution 2449: M1 - Examples of UCF syntax for placement and timing constraints.
Solution 1607: M1 - More examples of UCF syntax for timing constraints.
Solution 2938: M1 - Explanation of "unexpanded block" error in Ngdbuild.
Solution 8909: 3.1i - Tips for the use of low skew routing resources.
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