Subject: Re: MicroVAX I
To: None <,>
From: Johnny Billquist konsult <>
List: port-vax
Date: 03/25/1996 12:56:05
> >   Ragge, how difficult is it to hack in support for a new processor?
> > I'm wondering if it's within my capabilities...I'm not sure if it is
> > or not.
> > 
> It should be rather easy to write just the CPU support, if there
> are enough docs on the CPU available. The problem may be the
> peripherals. I don't know anything about MicroVAX I and the 
> difference between it and other MicroVAXen.

Unless I'm totally confused, it's a very plain Q-bus, same stuff
as in the MVII. The two differences I seem to remember is how the
memory is connected, and the fact that it's a different chip set.
Slow like hell, and you emulate a lot of the more advanced instructions.

I would guess that to get NetBSD to boot would require almost
no work at all.

But I might be wrong.