I doubt it
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The same motherboard, and maybe a cheaper version without 300mb extras, Nintendo reducing costs.
More than likely the 300 meg was the cheapest chip they could obtain in production... It's a lot cheaper to get what is the most mass produced memory to buy in bulk, and then just 'block' of access to the rest. Of course programmers figure out how to get around it.
If we talk about flash memory or SD cards it can cost more to get a 2 gb or 4 GB than say an 8 or 16 GB since the 8 or 16s are more commonly produced in bulk.
It would be cool if this time around they were only able to obtain say a 1 gb memory or more in bulk instead (as the 'cheaper' option), allowing for more space to be used
Myself I'm using my NES Mini specifically for NES games and possibly may in the future use it for Sega Master System games (since they use similar controller button layouts). You can easily fit most of both systems "English/translated' games on the same 340 megs of memory..... If the emulators work for them, I might add those rare Sierra PC-88/ Sharp X1 Hudson/Nintendo games to it as well, and maybe MSX2 Vampire Killer game as well (since its NES style 8-bit graphics). Of course I could always use it for Atari/Coleco games as well... Maybe Gameboy COlor/GB games since they share that 8-bit 'look'.
Then my Snes Mini will be used primarily for SNES games (and possibly Gameboy Advance), Hopefully it does have enough space to add most if not all the English or translated catalogue. Doubt I'll put Sega Genesis/MegaDrive on it though... Just not easy to get the right button layout. I don't have one of those six button Wii Arcade sticks. Now if someone is able to get Super Gameboy emulated on the SNES Mini (with all the bells and whistles) that would be awesome, and I'd put the Super Gameboy enhanced games on it as well (and definitely Donkey Kong, and Space Invaders)!
Then everything else I can't fit, will go on my RaspPi....
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Some guys who bought those club Nintendo controllers for obscene prices on EBay are kicking themselves in the head right now. Where did you find that picture?
Not upset, I got much use out of it on both a hacked Wii, Wii-U Virtual Console, and NES mini over the last few years.
It's unlikely that they'll sell 'extra' controllers for the SNES mini separately, either (in case anyone is wanting to get ahold of 'two' for 'cheap'.). Of course if someone figures out how emulate 'multitap' and plug more than one controller through the ports.... There is always that chance for 3 player Secret of Mana, or 4 player Bomberman (once people figure out how to get new games on it). Or simply have a backup/spare, or a gift to a family member/friend.
One can only hope someone figures out how to wire a mouse to the system as well for Mario Paint
.