B2 Spice A/D v5 contains a mixed mode simulator based partly on the Berkeley SPICE simulator and partly on the Georgia Tech XSPICE simulator. This means that you are getting industrial strength accuracy. Built upon the proven performance of B2 Spice A/D 2000 and B2 Spice A/D v4, V5's almost complete rewrite now brings you improvements and additions that will greatly expand the program’s funct..