I've been reading about NES dev for about 5 years now and everyone always asks about the hard drive and gets shot down. I want to resurrect my portable NES project, but am interested in a multi-cart which would make it easier than bringing around all my carts (which nintendo decided to make ridiculously large). I have a couple multi-carts I picked up from ebay, etc. Is it possible, difficult, whatever to make put together some kind of multi-cart using flash, even if the games on it were all mapper 1 or something. That's what I originally thought the MaxiCart was: A rewritable multi-cart. Just wanted to find out for sure about this stuff before I dismissed the idea.