Just thought I'll share --
http://www.pcworld.com/article/2599640/this-more-powerful-raspberry-pi-competitor-is-totally-free.html
I've applied for evaluation and can hopefully get into the program; the goal which is to find the lowest spec (most affordable) workstation which can run PSX comfortably.
Thought this might be of help to you:
http://www.oracle.com/technetwork/articles/java/raspberrypi-1704896.html
PSX does not run on the Pi... I would be surprised if it could on this competitor - especially in a way that would be usable. :)
Watching with interest
this runs windows 8.1 http://www.guru3d.com/news-story/zotac-debuts-the-zbox-pi320-pico.html (http://www.guru3d.com/news-story/zotac-debuts-the-zbox-pi320-pico.html)