Dosbox would most assuredly be cool, though as has always been said, we'd be lucky to get anything above (imo) an 8Mhz 386 with no sound hardware emulated. If that. Although bear in mind there's still a lot of games that would run on such a machine. If we even got *that* far... but hey, I can hope
Re: Emulation and the big N, I've always been rather confused about why precisely companies like nintendo make such a fuss about emulating games on another system - at least, as long as the consumer buys a real copy. If a big company endorsed emulation instead of eschewing it, they could actually stand to make quite a lot. Why? Its simple. For every console one of the big boys sells, they lose money. They get it back on games sales - so if they could get away without even producing the console (but still make money from the games) surely they'll make more money?
I mean, obviously, they'd need an appropriate copy-protection system in there, possibly alongside some kind of digital fingerprinting in the rom (I don't like the idea, but I see the point from a business point of view), but I don't see why the theory doesn't work.
One reason iirc they don't do this is the idea of a consumer owning old games and being satisfied and therefore not buying new ones. Fine, but again, if you're actually selling the games (as opposed to us all getting them off archives across the net), then you're still selling games. People will eventually get tired of them and buy something else. There's not really much greater risk of people not buying stuff than previously - at least, where handheld systems are concerned; I might own a GBA (in point of fact I don't) and choose not to buy a DS or a GBA2 or a DS8 because I'm happy with my GBA games. If I then DO decide to buy a DSx, Nintendo lose money. But the point at which I buy a DSx is the point, presumably, when I'm tired of my GBA, and therefore I'm likely to buy more games.
If I then want to play my GBA games, in the current model, I go and get my GBA out of the drawer and play them. In the alternative model, Ninty sells a GBA --> DSx "romifier" device (which basically acts like the standard cartidge copier kits you can buy from LikSang) and make money from me there. Furthermore, they continue to sell GBA games (which presumably at this given point in time are much cheaper to produce), possibly at slightly less than DSx games, but with an equivalent profit involved - and no further development costs.
Unless its simply too late, you see my point - there's actually a lot of profit to be made by endorsing emulation officially, but cripling the resultant rom in some fashion (either locking it to a single device, or fingerprinting it as mentioned).
But of course, the big companies don;t see it like that. Which is a pity - might make for an interesting period if they did.
Do bear in mind that the emulators for the old software, I'm assuming, would be officially written, complete with the horrible crippling DRM built in, as opposed to homebrew from a community like ours. I'm not arguing for homebrew (much as I love it, I *can* see a company losing money by endorsing that - its just, imo, worth the PR boost), merely for the official use of emulators.