SIMPRIM Library - 2025.2 English - UG900

Vivado Design Suite User Guide: Logic Simulation (UG900)
Document ID
UG900
Release Date
2025-12-17
Version
2025.2 English

Use the SIMPRIM library for simulating timing simulation netlists produced after synthesis or implementation.

Important: Only Verilog supports timing simulation; there is no VHDL version of the SIMPRIM library.
Tip: If you are a VHDL user, you can run post synthesis and post implementation functional simulation without standard delay format (SDF) annotation. The simulation netlist uses the UNISIM library. You can create the netlist using the write_vhdl Tcl command. For usage information, refer to the Vivado Design Suite Tcl Command Reference Guide (UG835).

Following is an example for specifying the library for Vivado simulator:

-L SIMPRIMS_VER

Where:

  • -L is the library specification option.
  • SIMPRIMS_VER is the logical library name that maps to the Verilog SIMPRIM.