If you want to quickly get a feel for traditional IBM mainframe software, you can do that easily enough. Download Hercules mainframe emulator [0] and then you c

If you want to quickly get a feel for traditional IBM mainframe software, you can do that easily enough. Download Hercules mainframe emulator [0] and then you can fire up MVS 3.8 [1] or VM/370 [2]. Be aware that the community has made significant improvements on these old open source software systems. [0] http://www.hercules-390.org [1] https://www.jaymoseley.com/hercules/installMVS/iPREREQv7.htm [2] http://gunkies.org/wiki/Installing_VM/370_on_Hercules