No boot on AlphaServer DS25

[John Klos <john%ziaspace.com@localhost>]

Hi, all,

It's been a few years since the magic smoke came out of a chip on the 
motherboard of my only Alpha. Recently, some fine people donated an 
AlphaServer DS25 which will be used for bulk pkgsrc package building and 
testing. However, it seems that while systems in the same family are 
supported and support is implied, the system doesn't boot either netbsd-7 
or current:

http://www.ziaspace.com/~john/alphanoboot1.jpg
http://www.ziaspace.com/~john/alphanoboot2.jpg

Has anyone else run NetBSD on a DS25 with EV68CB CPUs? I tried booting 
both the 6.4 firmware version that the machine came with and the upgraded 
7.3 firmware and got the same results.

Ideas?

Thanks,
John