A1.5i/F1.5i Implementation Tools:
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Solution 5887: 1.5i General - The 1.5i Service Pack 2 Update is available with fixes for several implementation applications including Map, PAR and Ngdanno.
Solution 5519: 1.5i General - New 1.5i Virtex Package files have been made available since Service Pack 2.
Solution 6492: 1.5i Map/PAR - Clock net LOC constraints may be ignored if IPAD to BUFG connection is used.
Solution 5930: 1.5i Map - Map fails to trim dangling CIN net leading to DRC warnings.
Solution 5861: 1.5i Map - Map does not support the use of RLOCs to combine SR16 with other logic such as registers in 1.5i.
Solution 5808: 1.5i Map - Map may crash after successfully writing output files in 1.5i.
Solution 5750: 1.5i Map - Try using the NO_DELAY_BASED_MERGE environment variable for map errors/crashes in 1.5i.
Solution 5663: 1.5i Map - Map can't handle Virtex carry chain loop in 1.5i.
Solution 5485: 1.5i Map - Map will sometimes fail due to interaction between multiple timing constraints that cover the same path in 1.5i.
Solution 5174: 1.5i Map - Map will fail on designs with FDRS flops with GND'd SET pins in 1.5i.
Solution 5120: 1.5i Map - Invalid error message can be ignored in 1.5i.
Solution 5075: 1.5i Map - Map fails when STARTUP component is connected to OFDTX pin in 1.5i.
Solution 4798: 1.5i Map - Prohibit constraints in .ucf file are sometimes ignored by map in 1.5i.
Solution 5075: 1.5i Map - Map fails when STARTUP component is connected to OFDTX pin in 1.5i.
Solution 5492: 1.5i PAR - Problems handling placement if TBUF nets with PULLUP in 1.5i unless PULLUP is LOC'd.
Solution 5591: 1.5i PAR - in 1.5i PAR may crash during placement on designs containg BLOCKRAM unless all BLOCKRAMs are LOC'd.
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 5153: 1.5i - Service Pack 2 corrects problems associated with Microsoft library MSVCRT.DLL.
Solution 2938: 1.5i - Explanation of "unexpanded block" error in Ngdbuild.
