Subject: Re: New virtual bus.
To: None <>
From: Paul Thompson <>
List: port-vax
Date: 07/12/1999 16:13:46
Forgive me if this is a dense question, but would this change be
beneficial for those attempting to port netbsd to other nonVAX QBUS
machines, i.e. the MIPS DECsystem 5400 or 5500?

I believe these have embedded DSSI (possibly SHAC?), for instance.


On Mon, 12 Jul 1999, Michael Kukat wrote:

> Hi !
> >I'm currently thinking about creating a new "virtual bus", like the
> >vsbus, but for MicroVAXen. As the vsbus actually is a resource holder,
> >the new bus (mvbus) isn't. I'll use it just to get a better hierarchy
> >for things like SGEC and SHAC that is available on some MicroVAX systems.
> >
> >It will look like this:
> >mvbus0 at mainbus0
> >sgec0 at mvbus0
> >shac0 at mvbus0
> >uba0 at mvbus0
> >
> >for example. Comments about this?
> Ah, my bus has just been delivered :-) Now we should make it look like the
> above design :-) I'm still waiting for tech docs, Just say, if you already
> start to do SHAC or SGEC stuff :-)
> so long... Michael