User guide

Running and Debugging Projects

Running on the ModelSim Simulator

Running on a Nios II ModelSim target allows you to execute code on a hardware simulation of

a Nios II processor system. Hardware simulation allows you to simulate cycle-accurate

behavior of a Nios II processor system. ModelSim is only available as a run target. You cannot

interactively debug executable code using the ModelSim simulator.

ModelSim requires hardware design files, and therefore the ModelSim simulation process is

linked closely with SOPC Builder. You can only run a ModelSim run configuration in the Nios II

IDE if the target SOPC Builder system was generated with the ModelSim simulation option

enabled in SOPC Builder. You must also turn on ModelSim only, no hardware support in

the System Library properties.

Full details of using the ModelSim simulator are beyond the scope of this help system, and are

available online. Refer to Related Topics

for more information on ModelSim.