Full Sam compatibilty isn't going to be trivial to add at all. However, he could easily add mode 2 and the SAM's ROM/RAM paging and gain the ability to use a (tweaked) SAM ROM. I think 'mode 2' is actually the TS2068's extra mode, so he'd get a speccy, a TS2068, and a mode-1-and-mode-2-only Sam for not much extra effort.
Andy
