Also it seem that Amiga OS classic can't deal with more than 512 megs of ram in any senario. Again, not sure if that is a hardware limitation as well, could be a Z3 bus issue as well.
With Amithlon AmigaOS can address 800Meg. With UAE you can assign even more (have used up to 1.5Gig myself). Granted they're emulators so there may be some sort of workaround involved, but I'd be inclined to think if there's typically a roof smaller than what a 32bit system can theoretically address (4GB) it's what Amithlon is hitting.
Anyone know for sure how much RAM os3.x can address?? (disregarding hardware limitations). Not really important, but I'd be interested to find out.
p.s. Sorry for being off topic.