Timing & Constraints: Top Solutions

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TRACE

• 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 2896 - M1 TRACE reports large delay on net driven by TBUFs with PULLUP
• 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• Solution 4382 - M1: Pressing F1 gives message that help file is out of date.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 1604 - M1: Pin Locking, I/O Constraints in UCF file
• Solution 1607 - M1 NGDBUILD: How do I specify Timespec and Timegroup constraints in a UCF file
• Solution 2449 - M1: Basic UCF Syntax Examples for Design Placement and Timing Constraints
• 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

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