I recall seeing screenshots of Quake running on a 770 (Check the earliest images in the gallery here) but I also remember hearing that performance was abysmal.
Since ARM lacks an FPU, you'd need to rewrite the code to integer only. There is one such project for PocketPCs (it is commercial, AFAIK - BTW I always wondered whether they bought the full license from id or if they are just plainly infringing the GPL, since I saw no code for download on their page). Anyway, one could start with PocketQuake or other ports and hack it to have an acceptable performance on the N770. I bet it is doable.
http://www.internettablettalk.com/ga...oto/40/cat/504
Last edited by thedarksavant; 2006-01-12 at 16:50. Reason: Added link to gallery photo.