ANDREI-a minicomputer nonlinear analysis program for integrated circuits

A circuit analysis program, ANDREI, has been developed which can be run on a 32K 16-bit word minicomputer with a disk unit. A novel virtual storage scheme is used to save internal memory required by large arrays. The nonlinear DC and transient and small-signal AC analyses of circuits up to 150 nodes and 150 elements can be performed in the present version. Semiconductor device models for diodes, bipolar junction transistors, junction- and MOSFETs are built in. ANDREI runs presently on a 32K VARIAN 73 minicomputer.