Emulation has been used for mainframe line-of-business type stuff for quite a while, perhaps the longest. But games get much more attention since emulating the

Emulation has been used for mainframe line-of-business type stuff for quite a while, perhaps the longest. But games get much more attention since emulating the system is an extremely popular way to preserve access to the experience. That said not all systems are made equal, and high accuracy treatments of old consoles(e.g. bsnes/Higan) can also be heavyweight.