> 
> Did you ever get an answer to the "stray interrupt: vector 0x18, ipl 31" 
> problem?
> 
[...]
> 
> SCSI Adapter 0 (761300), SCSI ID 7
> -DKA0 (DEC RRD42)
> 
> UQSSP Tape Controller 0 (774500)
> 
> UQSSP Tape Controller 1 (760404)
> -?
> 
[...]
> 
> >>>boot dka0
> >> NetBSD/vax boot [Aug 19 2001 05:57:49] <<
> >> Press any key to abort autoboot 0
> stray interrupt: vector 0x4, ipl 31
>
The vector 0x4 interrupt is "machine check". And looking at the config
it's obvious, you are trying to boot from some unsupported device,
therefore referencing some memory address that does not exist.

"boot dka0" would ask the boot program to load a kernel named "dka0"
from the default boot device, which probably is unsupported if you
loaded it from the SCSI adapter.

-- Ragge