[ I don't know how relevant this is now ... ]

> The above chip is a Sonic (i.e. the sn driver).  Why the ae driver is
> matching it, I don't know.

The drivers match based on the DrHW and DrSW values reported by the
cards.  The matches are done pretty loosely to try to match as many
cards as possible, so what you'll need to do is exclude this specific
card from the general match in if_ae_nubus.c and make it match in the
match function in if_sn_nubus.c.

-allen

-- 
                    Allen Briggs - briggs@ninthwonder.com