OK, so I finally got the adapter and tried to attach it to the machine and 
boot NetBSD. (I'm running 1.6.1-softfloat.) My GENERIC kernel sees it as 
six SCSI devices uk0 to uk5, and the SCSI inquiry command returns something 
like:

'Dayna'  'SCSI/Link'  '2.0'  processor/fixed

So it turns out to be a Dayna, as John Ruschmeyer said.

Then, surfing here and there I dug out the experimental driver that John 
told me about, which is a file named if_dse.c

Now for the questions:

- The driver is for version 1.5, anybody know if a more recent version 
exists?

- If not, can I just put it in the 1.6 kernel sources and recompile?

- How do I do that anyway? I mean, will I need to modify makefiles, add 
options to the config file, or something like that?

- Is there such a thing as kernel modules in NetBSD? Can I compile the 
driver as a module? (OK, this might be a silly linux-weenie question, don't 
shoot at me :-)

I think that's enough for now. Thanks in advance,

Damiano