I think touchscreen support could be easily emulated with a mouse. As far as actual emulation, I have no idea of the inner workings, how similar or not they are to the way PCs function. So it looks like my answer is they are just as different as any other handhelds, therefore emulation will be awhile coming if ever.
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DFI Blood Iron P35
Wolfdale E8400 @ 4GHz
2GB OCZ EL Platinum XTC DDR2-800
Radeon HD 4850 512MB
OCZ GameXtreme 600W
