Selection of analog simulation programs for the VLSI classroom

Various-sized PLA (programmable logic array) circuits were simulated using the programs SPICE2G6, RELAX2, and CAZM. Memory usage and CPU times for transient analysis were plotted versus transistor count. Classroom-related attributes of each simulator are discussed. It is concluded that RELAX2 and CAZM are appropriate simulation tools for the introductory VLSI classroom. SPICE2G6 should be used in the VLSI classroom only when critically considered necessary. In the absence of deliberation, default preference should be given to RELAX2 and CAZM due to their superior performance in computing transient responses of large circuits