1. A method for testing a reconfigurable emulation system to ensure that it accurately implements a netlist description of a functional circuit, the method comprising the steps of: configuring the reconfigurable emulation system to implement the functional circuit; applying stimuli to the functional circuit implemented in the reconfigurable emulation system, thereby causing the functional circuit implemented in the reconfigurable emulation system to generate an actual response, said stimuli applied in a first emulation cycle; detecting when said actual response differs from an expected response during said first emulation cycle; if the actual response differs from the expected response, specifying a particular net where an apparent error is located in the netlist description and the time within said first emulation cycle when said apparent error occurred; and modifying said stimuli applied to the functional circuit implemented in the reconfigurable emulation system to include a read-back signal which, during a subsequent emulation cycle, is applied to said particular net where said apparent error is located at a time corresponding to said time of said apparent error, said read-back signal causing the reconfigurable emulation system to output state information of the reconfigurable emulation system at said particular net where said apparent error is located at said time of said apparent error.