DECUS Heritage
Version: V2.2, January 1985
Submitted By: Digital Equipment Corporation
Operating System: VAX/VMS V3.0 and 4.0
Source Language: C
Keywords: Circuit Simulation, Simulations
Software Requirements: VAX-11 C Compiler V2.0
Memory Requirements: <1MB
Notes: This program was developed by the Computer-Aided Design Group, Department of Electrical Engineering and Computer Sciences, University of California- Berkeley.
Abstract: RELAX2.2 performs a fast and accurate transient analysis of Metal-Oxide Semiconductor (MOS) integrated circuits. The program uses a mixture of direct methods, like those used in the SPICE2[2] program, and a modified version of the Waveform Relaxation Algorithm (WR)[1,3]. This combination of methods can greatly improve the computational efficiency of circuit simulation for MOS digital circuits by exploiting their loose coupling and relative inactivity, and still efficiently solve tightly coupled analog circuits by switching automatically to direct methods when appropriate. Using the combination of methods, RELAX2.2 can produce results of the same accuracy as SPICE2[2] for both analog and digital MOS integrated circuits, but often uses less than 10% of the computer time.
Last Update: Thu Jan 11 18:20:32 1996
Submitted By: Digital Equipment Corporation
Operating System: VAX/VMS V3.0 and 4.0
Source Language: C
Keywords: Circuit Simulation, Simulations
Software Requirements: VAX-11 C Compiler V2.0
Memory Requirements: <1MB
Notes: This program was developed by the Computer-Aided Design Group, Department of Electrical Engineering and Computer Sciences, University of California- Berkeley.
Abstract: RELAX2.2 performs a fast and accurate transient analysis of Metal-Oxide Semiconductor (MOS) integrated circuits. The program uses a mixture of direct methods, like those used in the SPICE2[2] program, and a modified version of the Waveform Relaxation Algorithm (WR)[1,3]. This combination of methods can greatly improve the computational efficiency of circuit simulation for MOS digital circuits by exploiting their loose coupling and relative inactivity, and still efficiently solve tightly coupled analog circuits by switching automatically to direct methods when appropriate. Using the combination of methods, RELAX2.2 can produce results of the same accuracy as SPICE2[2] for both analog and digital MOS integrated circuits, but often uses less than 10% of the computer time.
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Last Update: Thu Jan 11 18:20:32 1996