This software package implements the simulation algorithm described in the tech report “Using GF(2) matrices in Simulation and Logic Synthesis” found in this archive. (http://hdl.handle.net/2104/5263). This package is part of the FHDL system. Two executable files are produced HyperSim(.exe) and HyperSimA(.exe). HyperSimA is the preferred implementation. This package depends on the connlib and hyper2 packages also available from this archive.