my gosh people, the computer has to boot!
You can't just run the os on a card, the os interfaces with the hardware of the system....good grief its more complex than that, in order to support pc and mac you'd have to do a bunch of work.
The reason os/4 might run on a amiga with this card is cause os4 can boot from the amiga side, and its a simpler job to have the powerpc code run on the powerpc pci card....however even thats not trivial and either someone wrote the support or it wasn't written.
