Does the new OS run the old Amiga games and applications or is it only good for new software? Would like to know before investing money in a new system. Maybe it contains an emulator for the old Amiga stuff?
AFAIK on all amiga OSes applications that use the amiga hardware directly have to be run in UAE. And for running UAE WinUAE is the most advanced version.
Applications that don't access hardware should run both on MOS and AOS4. Here MOS seems to be more compatible as it implements the side effects of the OS3.x functions more strictly than AOS4. On AROS such applications can be run in a special configuration of UAE where the windows appear on the normal AROS screen.
greets,
Staf.