Koda, on 30 August 2014 - 01:35 AM, said:
I can't tell if you're joking, but adding online play to a game that was released on hardware that didn't have any networking capabilities is very much outside the realm of possible, let alone through a low level assembly hack.
Maybe there's a general netplay plugin for ePSXe that would let someone else pick up player 2's inputs if that's something you really wanted to do.