At least one program storage device readable by a computer, tangibly embodying at least one program of instructions executable by the computer, to perform a method of facilitating debugging of simulation results obtained for an optimized simulation model of a device design having hierarchically-connected components, the method comprising:
- receiving a component port name of the device design to be searched;
- automatically checking a hardware descriptive language description of the device design for a next higher level component of the device that instantiates the component having the component port name to be searched;
- locating a signal name in the next higher level component that is connected to the port identified by the component port name;
- and
- outputting the signal name as a signal that drives the named component port when the signal is other than a port signal of the next higher level component.