I have some constraint lines in the UCF like these:
NET "CLK" TNM_NET = CLK;
NET "CLK" TNM_NET = FFS "CLK2";
TIMESPEC TSclk = PERIOD "CLK" 20ns;
TIMESPEC TS_A = PERIOD "clk2" TSclk*2;
When running Translate, the following error is reported:
ERROR:TSDatabase:19 - Processing TIMESPEC definition "tsa=PERIOD "clk2" TSclk * 2.000000 HIGH 50.000000 %" from UCF file: No TNM, TPSYNC or user group named "clk2" is defined.
The UCF file is case sensitive. Please ensure that you have defined the group that appears in the TIMESPEC line, and make sure you have the correct group name that is consistent with your group definition. This problem can also be caused by logic trimming.