Subject: Re: DSSI support for NetBSD: request for docs.
To: Jochen Kunz <jkunz@unixag-kl.fh-kl.de>
From: Johnny Billquist <bqt@update.uu.se>
List: port-vax
Date: 02/27/2002 14:12:39
On Wed, 27 Feb 2002, Jochen Kunz wrote:

> On Wed, Feb 27, 2002 at 12:03:49PM +0100, Johnny Billquist wrote:
> 
> > :-) I have a bunch of UDA50, both for my PDP-11s, and for the 8650.
> Hmpf. I need the machine for a UDA50. Don't you have a PDP 11/70 
> handy? ;-)

I might. Can you affort the transport? :-)

> > However, the Ultrix driver is a beautiful beast. When you declare an MSCP
> > disk, you don't say where it's located. You just say:
> > disk ra<x> at mscp drive <y>
> > 
> > Controllers are declared as:
> > controller uda0 at uba0
> > controller uq0 at uda0
> > controller hsc0 at ci0
> > 
> > And then the disks can be either at hsc0 or uq0, and you can move them
> > without problems.
> > DSSI is yet another, and so on...
> This is also true for NetBSD. From my knowledge the shebang should
> be build like this:

[...]

I'll have to blame my bad memory for still living in the old ra driver...

> > True. And also, the NetBSD RA support have some bug in it, along with
> > being very much tied to the UDA50/KDA50 right now.
> As Ragge already stated, at least the last objection is not true
> anymore. The NetBSD MSCP stuff resides now in sys/dev/mscp what means
> that it is machine independent. This also implies proper abstraction
> of the MSCP stuff from the underlieing controller hardware. 

You both are probably absolutely correct, so I withdraw my claims. :-)
Now I only wish I had some time to try finding the bugs in the mscp
driver...

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt@update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol