Answers Database NGD2VHDL 2.1i - Instance dll0_clkdll does not have generic named 'tperiod_clkin_posedge' (X_CLKDLL) Record #6720 Problem Title: NGD2VHDL 2.1i - Instance dll0_clkdll does not have generic named 'tperiod_clkin_posedge' (X_CLKDLL) Problem Description: URGENCY: Hot GENERAL DESCRIPTION: When trying to do a post place and route simulation on a virtex design which uses the DLL in Modelsim you get the following error when you simulate: #ERROR: time_sim.sdf(91): Instance dll0_clkdll does not have generic named 'tperiod_clkin_posedge' Solution 1: Three lines must be changed from the following two VHDL simprim files: 1) simprim_Vcomponents.vhd line 526 reads tperiod_CLKIN : VitalDelayType := 0.010 ns; should be changed to:    tperiod_CLKIN_POSEDGE : VitalDelayType := 0.010 ns; 2) simprim_VITAL.vhd line 1631 reads tperiod_CLKIN : VitalDelayType := 0.010 ns; should change to    tperiod_CLKIN_POSEDGE : VitalDelayType := 0.010 ns; line 1798 reads Period => tperiod_CLKIN should change to Period => tperiod_CLKIN_POSEDGE After making the above changes you will need to recompile the files. Please see (Xilinx solution 2561) Resolution 2, the VHDL SIMPRIM section. This problem is fixed in the latest 2.1i Service Pack available at: http://support.xilinx.com/support/techsup/sw_updates/ End of Record #6720 - Last Modified: 10/21/99 11:23

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