Answers Database M1.5 DC2NCF: TNM attribute created from DC2NCF causes warnings in NGDBUILD Record #5085 Product Family: Software Product Line: FPGA Implementation Product Part: dc2ncf Product Version: 1.5p Problem Title: M1.5 DC2NCF: TNM attribute created from DC2NCF causes warnings in NGDBUILD Problem Description: Urgency: Standard Using M1.5 DC2NCF with Synopsys, the following NCF notaction is created for a create_clock command: TIMESPEC TS_CLOCK = PERIOD : "CLOCK": 50 : HIGH : 25; NET "CLOCK" TNM = "CLOCK"; This causes the following warning in the M1.5 version of NGDBUILD: WARNING:basts:158 - PERIOD TIMESPEC 'TS_CLOCK' has TIMEGRP 'CLOCK' which     contains only PAD elements. This capability will soon be obsoleted as it has     been replaced by the TNM_NET constraint. Solution 1: The constraint still works properly however if you wish to see these warnings dissapear in NGDBUILD, you can manually change the TNM constraint to a TNM_NET constraint as following: TIMESPEC TS_CLOCK = PERIOD : "CLOCK": 50 : HIGH : 25; NET "CLOCK" TNM_NET = "CLOCK"; The warning goes away and the timespec will still translate properly. This change for DC2NCF has been proposed for the next release of the software, M2.1. End of Record #5085 - Last Modified: 11/23/98 10:26

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