Subject: Re: Sigh, will DSSI disks *ever* work with NetBSD?
To: Thomas Dzubin <>
From: Chuck McManis <>
List: port-vax
Date: 11/20/2002 08:23:55
I'll put in my $0.02.

I worked on this (DSSI support in NetBSD) off an on for a while, 
documentation is sparse and some of it conflicts with itself. I've 
collected the following bits of it:

         - MSCP internals (Part 2 of the UDA50 programmers guide)
         - KA640 and KA660 CPU manuals (talk about the DSSI chip)
         - DEC Storage Architecture Handbook
         - Ultrix and VMS sources

On my 3300 I was able to, through a gross hack, send the equivalent of an 
MSCP "inquire" command and have it talk to a drive. I started the process 
of adding the I/O, I've got a fundamental disagreement on how the disks 
"should" appear when they are detected.

I live in the San Francisco Bay Area where not only is the cost of power 
high, but also it feels like the 1930's to a lot of folks. That hasn't been 
very motivational :-(


At 04:27 AM 11/20/2002 -0800, you wrote:

>I've got quite the collection of various 4000-series VAX here with a
>bunch of DSSI  disks...which are quite nice when I occasional boot up
>VMS, but it would sure be nice to be able to use them under NetBSD...
>instead, I bring out my external SCSIs and plug them in...
>Will DSSI ever work with NetBSD?
> this being actively worked on?
>Should I take my RF72s out and sell 'em on eBay?
>I doubt if I have the hardware-savvy to be able to volunteer to work on
>any code...although I am quite willing to be a code guinea-pig.
>Thomas Dzubin
>Calgary, Saskatoon, or Vancouver CANADA