> 
> The thing in common: KA650 CPU,
> the difference: CMD-220 vs. Dilog SQ739Q, but both MSCP-to-SCSI
> 
> Other equipment in "my" machine: M7516 (DELQA), M3106 and a 
> Distec AD-converter. 
> 
> Someone pointed out, it might be a result of a new memory managment
> system introduced by 1.4. Can this be confirmed by now? (I would not 
> imagine, a bug like this would not be fixed to 1.6) Might 1.3.x mitigate
> my problem? Or are there other alternatives to bring the taste
> of Unix to the box? Is there anything else I can try? Did I miss 
> something? What have I done, NetBSD has chosen not to be my friend?
> 
I have heard about this problem, but that it probably is because
of buggy controllers.  I have a MV3900 (ka650) with a "normal" KDA50
that I run regularily without problem.  

It does most likely not have anything to do with the memory management.

It would be good if someone with any of these MSCP-to-SCSI controllers
could find the bug, myself I only has the original DEC controllers to
deal with (and they work!).

-- Ragge