You can run classic and modern mainframe operating systems and software with hercules-390 emulator.

I suggest Jay Moseley’s excellent site on MVS system generation [1] or get Jürgen Winkelmann and Volker Bandke MVS Turnkey installed system ready to go [2].

[1] http://www.jaymoseley.com/hercules/installMVS/install.htm [2] http://wotho.ethz.ch/tk4-/