This paper introduces a behavior model of a memristive soild-state device for simulation with a simulation program for integrated circuits emphasis (SPICE) compatible circuit simulator. After showing the underlying functional mechanics and model equations of a memristor the SPICE equivalent circuit based on a charge controlled memristor is presented and discussed. Hereafter, a magnetic flux controlled memristor model is introduced including technical description and SPICE implementation. It is shown that the presented SPICE models meet the requirements for simulations of multi memristor circuits.