Subject: Re: New virtual bus.
To: None <>
From: Lord Isildur <>
List: port-vax
Date: 07/13/1999 11:54:41
But why? the shac and sgec are connected directly to the DAL lines, 
and essentially act as nexus devices! configure them as such!

cpu0 at mainbus0 
uba0 at mainbus0 (if theres a Q or unibus) 
sgec0 at mainbus0
shac0 at mainbus0
etc etc

why create an added layer just to make the embedded nexi look like
ordinary bus-conected devices? the nexus is a really cool construct! 

just my $.02

On Mon, 12 Jul 1999, Anders Magnusson wrote:

> 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?
> -- Ragge