So I've recently acquired this prototype cart for a Famicom game called Little Ninja Hattori-kun. To my knowledge, there wasn't any standardization for test cartridges for the Famicom, so companies would typically fabricate whatever hardware they needed at the time. My question here is twofold: does anyone have any idea what the switch on the board actually does? Information on games with these switches seems very scarce, but I did come across a thread here that said that they might be used to delete data of the cartridge, but if that's the case, then why leave the eproms exposed? Also to my knowledge the game is identical to the full release, however on the off-chance it isn't, I'd still like to dump it, so if anyone could perhaps point me in the right direction for that, I would super appreciate it.