Links or pics would help the group tell you for sure.
RTS = Real Time Save. N hasn't bothered with any new blocks on R4 carts since 9.4 or 9.5. Doubtful any new block is going to come. Just to verify, R4 carts will work on a 3DS but are only going to play DS ROMS or emulate NES GB or GBC. Anything like SNES or GBA will not emulate well on a R4 cart...need to look at a DSTwo. If you want to run 3DS ROMs you'll need a Sky3DS on 10.1.