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The Quest To Build Xbox One and PS4 Emulators
Nerval's Lobster writes "Will Xbox One and PS4 emulators hit your favorite download Websites within the next few years? Emulators have long been popular among gamers looking to relive the classic titles they enjoyed in their youth. Instead of playing Super Mario Bros. on a Nintendo console, one can go through the legally questionable yet widespread route of downloading a copy of the game and loading it with PC software that emulates the Nintendo Entertainment System. Emulation is typically limited to older games, as developing an emulator is hard work and must usually be run on hardware that's more powerful than the original console. Consoles from the NES and Super NES era have working emulators, as do newer systems such as Nintendo 64, GameCube and Wii, and the first two PlayStations. While emulator development hit a dead end with the Xbox 360 and PS3, that may change with the Xbox One and PS4, which developers are already exploring as fertile ground for emulation. The Xbox 360 and PS4 feature x86 chips, for starters, and hardware-assisted virtualization can help solve some acceleration issues. But several significant obstacles stand in the way of developers already taking a crack at it, including console builders' absolute refusal to see emulation as even remotely legal."
On the plus side, emulating an AMD x86 and GPU is likely to be considerably easier (especially since AMD's current or near-future PC parts are likely to be extremely similar in most respects, though you will probably have to go up a few speed grades to deal with the emulator running on top of a full OS) than emulating either the relatively fast PPCs of the previous generation (PPC-on-x86 is done; but doing that really fast is another story) or the slow-but-somewhat-esoteric-and-absolutely-every-oddity-was-used-and-abused architectures of the older consoles.
On the minus side, the odds are good that both new consoles (especially the Xbox, given MS's software side; but probably the PS as well) contain a lot of software that, while not integral to the tightly-optimized-graphics-twiddling aspects of the games, will probably have to be given a fairly precise "WINE-like" treatment to avoid breaking things all over the place. Not necessarily impossible (as WINE itself demonstrates); but definitely a different game than the 'emulate the hardware and let the ROM do as it will' emulators that work for older consoles.
On the very minus side, it would not be out of character for either MS or Sony to have added some nasty copy-protection-related cryptographic goodies that will be very hard to emulate. MS, given their PC background, might well have gone for a TPM. Architecturally, emulating one of those would be cake by the standards of what the emulation scene has taken on, except for minor matters like the endorsement key. A TPM emulator that emulates a TPM loaded with the 2048-bit RSA private key of your choice? Sure, no problem. The correct private keys? That might be an issue.