Thanks for the reply. Now how did Amiga get ported to those rare and discontinued boards and not to any mainstream hardware? (well, mainstream-ish) I've never actually seen an Intellistation or RS/6000 in person.
Prices for an RS/6000 started at around $10,000 and went up to well over $100,000. A used Intellistation Power 185 will cost you $6000+. Not really a good choice for porting an OS to.