In one embodiment, the invention is directed to a method of processing a database
comprising information regarding hardware design language ("HDL") events occurring
during a simulation of a hardware design. The method comprises identifying in the
database all HDL events comprising observability events; obtaining from each of
the identified observability HDL events information pertaining to a signal driving
the identified observability HDL event observed on an observability bus; and creating
a data structure comprising a plurality of entries, wherein each of the entries
corresponds to one of the signals observed on the observability bus and contains
signal information pertaining to the one of the observed signals.
