I just acquired an adapter to play Famicom games inside an NES.
The thing works pretty well and comes with a nice casing and a ribbon to help taking it out of the system.
But the funny thing is there is little opening inside the connector with a window where you can see some hidden circuitry. I can see at least 2 transistors, 2 resistors and 1 ceramic cap.
AFAIK you do not need any extra parts for these adapters. The "official" gyromite one did not have any. So no need to say this has gotten me curious and I want to see inside it asap!
Problem is I cannot figure out how opening yet. There are no screw on this thing!! Looks like they glued it shut! I cannot see any evidence of screws hidden under the labels. I do not feel like peeling the labels needlessly or breaking it just to see inside. Anyone has opened one like that before?