Timing & Constraints: Top Solutions
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Solution 2586: 2.1i: CE/Timing: VIRTEX CLKDLL TIMING for 2.1i
Solution 6245: 2.1i: Timing Analyzer: Blockram components are not listed in RAM Sources/Destinations element types.
Solution 6445: 2.1i: TRCE/Timing Analyzer: ERROR: basut: 162 - This Xilinx application has run out of memory ...
Solution 6447: 2.1i: TRCE/Timing Analyzer: Unconstrained path report contains constrained paths.
Solution 2740 - M1.x: TRCE: How to analyze (the longest) nets/paths in timing constraints
Solution 1867 - M1 TRCE: IOB register to PAD paths (and vice-versa) are not reported or controlled
Solution 2435 - M1 TRCE: 0 paths analyzed for a TIMESPEC
Solution 2963 - M1 TRCE: How to find the signals not covered by TIMESPECs?
Solution 3015 - M1 TRCE: PERIOD placed on net between PAD and IBUF not analyzed.
Solution 3016 - M1 TRCE: TNM placed on net between PAD and IBUF/BUFG not forward traced.
Constraints Editor
Solution 6355: 2.1i: Constraints Editor: PULLUP/PULLDOWN constraints from the NGD file are not displayed.
Solution 6357: 2.1i: Constraints Editor: Pad group pulldown lists all groups instead of just pad groups
Solution 6383: 2.1i: Constraints Editor - TIMESPEC TSxx = FROM(abc) TO(xyz) - WARNING : Unable to create FROM TO with tsxx
Solution 6384: 2.1i: Constraints Editor - Wildcard symbol " * " is not supported by Constraints Editor
Solution 6386: 2.1i: Constraints Editor - Can not create relative FROM PADS TO PADS constraints in the FROM/THRU/TO dialog
Solution 6388: 2.1i: Constraints Editor: Can't override TSid from a source constraint
Solution 4382 - M1: Pressing F1 gives message that help file is out of date.
Solution 4567 - M1: UCF files that contain 'EXCEPT' causes a Dr. Watson Error or program crash.
Solution 4591 - M1: NET PERIOD constraints are incorrectly interpreted by the Constraints Editor.
Solution 4879 - M1: Constraint Editor crashes when loading .NGD file, if clock signals are attached to bi-directional pads.
Constraints
Solution 6905: 2.1i: CE/Timing: How to apply a Period constraint on Virtex CLKDLL for 2.1i
Solution 2449 - M1: Basic UCF Syntax Examples for Design Placement and Timing Constraints
Solution 1607 - M1 NGDBUILD: How do I specify Timespec and Timegroup constraints in a UCF file
Solution 1604 - M1: Pin Locking, I/O Constraints in UCF file
Solution 3011- M1 NGDBUILD: UCF constraint on element with special char. gives "ERROR:baspr - SSLex0105e: Invalid token"
Solution 3015 - M1: PERIOD placed on net between PAD and IBUF not analyzed
Solution 3016 - M1: TNM placed on net between PAD and BUFG/IBUF not forward traced
