Simulation method and system of verifying operation of semiconductor memory device of memory module at design level

A simulation system comprising:

• a processor configured to execute a simulation program when a simulation program execution command is applied, and create a graphic user interface (GUI);
• a storage configured to store a design file of a printed circuit board (PCB), a design file of a registered clock driver (RCD), and a design file of a semiconductor memory device, a design file of a memory module, and a command truth table;
• a main memory configured to load the simulation program;
• and
• a display configured to display the GUI,
• wherein the processor loads the design file of the PCB, the design file of the RCD, and the design file of the semiconductor memory device to the main memory, in response to the design file of the PCB, the design file of the RCD, and the design file of the semiconductor memory device, the design file of the memory module, and a test program, stored in the storage, being selected through the GUI,
• wherein the processor creates the memory module for testing the RCD, in response to a configuration and an arrangement of the RCD based on the design file of the RCD, and a configuration and an arrangement of first semiconductor memory devices to fourth semiconductor memory devices based on the design file of the semiconductor memory device, on the PCB, being set, and a connection between board control signal terminals of the PCB and driver input terminals of the RCD, a connection between first board control output terminals of the PCB and first driver output terminals of the RCD, a connection between second board control output terminals of the printed circuit board and second driver output terminals of the RCD, a connection between third board control output terminals of the PCB and third driver output terminals of the RCD, and a connection between fourth board control output terminals of the PCB and fourth driver output terminals of the RCD, being set, through the GUI;
• and
• wherein the processor executes the test program to apply control signals to control signal terminals of the PCB based on the command truth table, to compare the applied control signals and control signals output through first driver output terminals of the RCD, and to create an RCD test result, in response to a RCD test execution command being applied through the GUI.