Quoth Achim Hensel:
>Hello, folks (of both lists)
>
>I recently got both an R4k and an R3k SGI Indigo. 
>
>I know, none of them is supported at the moment.
>So, I want to try to change that.
>
>I hadn't started yet, but every help is appreciated.

NetBSD doesn't have support in-tree for either of these, but there
has been some work done to make the R4K work.  
http://www.cataclysmic.org/sgimips/ has some of it.  I believe
that Steve Rumble did more work on cleaning it up, but I think he's
out of country at the moment.  It's a place to start, for sure.