PseudoStation was the predecessor to MicroStation and predates version 1.0 by more than a year (circa 1984). This software was installed on the Digital Equipment Corporation VAX super-mini computer on which the Intergraph IGDS software and special hardware was installed. The purpose of this software is best described by the first paragraph of the original User's Guide (from version 2.50).
The following is part of the opening paragraph describing the product:
"The PseudoStation software package allows the use of low-cost graphics terminals to access Intergraph design files. The software is designed to emulate the function of the Intergraph workstations as closely as possible, within the constraints imposed by the use of low-cost terminals. consequently, most of the concepts of PseudoStation operation are familiar to users of the Intergraph system, and in most PseudoStation commands have exact workstation analogues..."