Can anyone ID this die? www.seanriddle.com/spaceinvadersamic20xs.jpg

It's off a Space Invaders Plug n Play game. It was under one glob, with a CPU under another and a ROM under a third.

This die is labeled AMIC (C) (M) 1998-1 AM3122A. I can't find that part #. I really just need to know if it's ROM, flash or RAM. AMIC made them all.

I'm guessing 32 pins, with power and ground each getting 2 pads. It seems to match up pretty well with the LP62S2048A pinout.