Hello everyone. I recently bought this Naomi 2 with the intention of repairing it after diagnosing what could be wrong, but I see it's been touched before. The supercap is gone, so at the very least I think the original owner knew some things about this PCB. Now, I also noticed the IC in the pic below missing. Is this part of a known mod or potentially a board that was starting to be used literally For Parts? I tried searching the web for any board mods and came up empty regarding this. Any ideas would be appreciated it.