I actually know of a way to get NBA Jam and Mortal Kombat to run on PS3 with iMAME4All - but it involves hacking up the driver so there's no more sound. There's no telling what is really broken in this old codebase - MAME 0.36 was released back in 2000 - so it's almost 12 years old. Probably lots of endian issues and 32-bit isms. I consider iMAME4All a stop-gap really for the real port which will be MAME 0.72 (released three years later - 2003) - iMAME4All is based on a very old MAME version and its emulation of games like Mortal Kombat 2 is definitely poorer than - say - MAME 0.72. This iMAME4All libretro port was originally intended for the Raspberry Pi - which has such a slow CPU (Pentium 2 300Mhz-esque performance) that it really needs a very, very old version of MAME for it to run well. Again, if the MAME project had more concern for at least maintaining performance between versions we wouldn't have this problem where we have to resort to 10/12 year old versions of a project.