I had a similar problem with mine.  Are you booting into the SRM
console and you get an error like "Incompatible PCI device in slot
X?"  It might be because you have your 32-bit Matrox Millenium II
card in a 64-bit PCI slot (the long bottom two).  Try moving it up
to a 32-bit PCI slot.  That fixed the problem for me.

     Proof!  :)

=======

login as: root
root@192.168.0.16's password:
Last login: Tue Nov  5 08:33:39 2002 from 192.168.0.1
NetBSD 1.6 (GENERIC) #0: Sun Sep 8 12:15:59 UTC 2002

Welcome to NetBSD!

Terminal type is xterm.
We recommend creating a non-root account and using su(1) for root access.
bash-2.05# uptime
 9:15AM  up 23:08, 2 users, load averages: 0.21, 0.14, 0.10
bash-2.05#

=======

--
cvk@zybx.com

>
> Hello,
> I got a alphastation 500/333. There is Digital UNix installed on IT, I
> Wanted to install FreeBSD. The problem is that at boot time I got this
> error:
>
> SERR on PCI
>
> and it stops booting. I think this message comes from SRM.
> anyone has an idea about this error and a possible fix?
> thanks a lot
>
> Rick