If you can find an emalator for it, it may work.
On the topic of old systems, simh (http://simh.trailing-edge.com/
) may well compile on the Raspberry PI, it seems to work on VMS ( Alpha and Itanium), Linux and Windows boxes and allows the emulation of a number of ancient machines (PDP10, PDP11, IBM 1401 and more). There is also some software available to run on the emulated systems.
Hmm and MVS is free if I can find an emulator and the software. Might be worth a look just for the fun of it.