I just bought an Adaptec 2940, and put it in my config file like this:

ahc*	at pci? bus ? dev ?		# Adaptec 2940 SCSI controllers
scsibus* at ahc?

The probe finds it, but doesn't recognize it.  Claims it's an unknown
vendor/product 9004/8178.  This is with NetBSD 1.1.  Is there a suggested
fix?