The website specifies that these are “simulations” (re-creations of the games’ apparent behavior that attempt to stay faithful to the original) and not “emulations” (reproductions of the actual hardware behavior of the circuitry): http://www.madrigaldesign.it/sim/info.php
The website specifies that these are “simulations” (re-creations of the games’ apparent behavior that attempt to stay faithful to the original) and not “emulations” (reproductions of the actual hardware behavior of the circuitry): http://www.madrigaldesign.it/sim/info.php