FWIW in the 1.5_ALPHA2 GENERIC kernel config file there is the following

# PCI SCSI controllers
ahc*    at pci? dev ? function ?        # Adaptec [23]94x, aic78x0 SCSI

So, it looks like it is. Tho YMMV of course.

Regards
Nigel

> 
> Dear netbsd-help,
> 
> I learned from the install.html page that you got a lot of questions re.
> this SCSI card: Adaptec 'AIC-7890' and it was not currently supported.
> This is nice and clear.  One thing that confuses me is that AIC-789x (ahc)
> is also listed in the PCI devices part of the 'NetBSD/i386 supported
> hardware' page: http://www.netbsd.org/Hardware/pci.html.
> 
> SO, is this just some inconsistent notes or there's now support for
> AIC-7890??  I'd appreciate if you could clear this out. Thanks.
> 
> -Polly
> 
>