JSIM is a circuit simulator, optimized for superconductive circuits using Josephson junctions. It has a SPICE-like input deck and produces one or more ASCII (text) output files. The standard output file is SPICE-like, but without the text plotting capability. The optional output files are columns of output numbers which can be parsed and passed to a graphing utility like xgraph.
The program is specially optimized for Josephson circuits. It does not include models for any semiconductor devices. Junctions, inductors, capacitors, resistors, lossless transmission lines, and sources are supported as well as subcircuits. The algorithm uses the fixed point method to reduce the iterations for solving the coefficient matrix for each time step. The performance improvement increases for larger circuits. Additional simulation control is included with MAXPHISTEP in .OPTION and FCHECK on the inductor instances for flux quantization in superconducting circuits.
Documentation Included with the Program:
- JSIM User's Guide/Installation Notes. Available separately for $3.00
Foreign Distribution: Yes