mwm@VIOLET.BERKELEY.EDU (Mike Meyer, I'm in love with my car) (07/20/88)
The two are very compatable. The only catch is that "MOVE SR,<ea>" is a privileged instruction on the 68010, where it wasn't on the 68000. Programs that use it on the 68010 will trap where they didn't before. The solution is to insert a shim to catch those traps, do the move for the user-mode program, and then return. Supposedly, there's a Moterola app. note that describes this in detail, including code for that trap handler. I've never seen it, but I may have a code listing somewhere. I've done this. The speedup on my Amiga was between 4 and 5 percent. I don't think it's worth the trouble for that. If you really want to play VM games, then it's wortth the trouble. <mike