The DS has two screens, one being touch-sensitive, of 256 x 192 pixels. Classic Amiga Workbench was "hi-res" at 640 x 200 NTSC (640 x 256 PAL). I dunno how you would do the emulation, scale everything down on the fly? Classic arcade games were "low-res" at 320 x 200 NTSC (320 x 256 PAL) so I don't see that you could do those either. Also, the DS can do some nice things but I dunno if it has the horsepower to emulate a classic Amiga in a usable way.
