Of course, it's not possible at all remember? 
Well lets see:
- would this be 100% source-code compatible to anything written for AmigaOS3.x ?
- would this run stable while executing legacy code on a (non-existant) dual 680x0 setup ?
Noone ever said that it was impossible to write an SMP-OS with an API similar to AmigaOS running recompiled (and patched) SW.