since my ps2 does not get much use anymore I decided to do an internal memory card mod. I put 2 card inside the PS2, 1 PS1 and 1 PS2. I wired them to a switch and connected them both to slot 1 so I can switch back and forth.
Here are some pictures, I know the quality is not great all I had was my cell phone to take them.
Later on I will post a youtube video showing it in full, have not had a chance to mount the switch yet though had to go to work early.
if anyone want me to type up a tutorial I'd be happy to.
EDIT: See post 10 for wiring diagram.