Just about every consoles has a form of multi carts these day from Atari 2600 (Harmony cart does 99% of the games) to Everdrive for N64. There are very few consoles that do not have multi cart or only have fixed multi cart (EPROM based, fixed and not reprogrammable easily) Neo Geo and MVS for example are currently limited because it's a beast to build a multi cart but I hear whispers that a flash cart is in the works. So what console are missing flash based multi cart? Fairchild Channel F and Arcadia comes to my mind but those are very old and rather obscure systems that may not have the following to make profitable multi carts. Any other idea?