I did a lot of extensive research and found a considerable number of people wanting a reprogrammable flash cart of some type for it but no one has seem to of built one. I agree nothing is technically impossible. They have them for the SNES and NES which both had serious hurtles to jump. I was thinking of getting one of those PowerPaks as a birthday slash Christmas present for myself. Might order it today, who knows...
Anyway, I think the reason might be difficulty verses possible profit. There might not be enough AES's left in use that would warrant someone spending the time and money developing such a device. When I first heard of a Neo Geo was in a gamers mag from back in the day. I couldn't believe the price they were asking but later understood it was a serious system for serious collectors that wanted the closet thing they could get to an arcade machine at home. I think low production number and high prices kept most of your average gamers away from this unit.
In January I start back school on my way to becoming an electrical engineer. This might make a good project down the road when building stuff like that isn't so far over my head. Or at least better explain why I couldn't do it.
