> > got unlazy for a minute (needed more water) so i stopped by and picked up my
> > VAX 4000 Model 400/500/600 manual off of the shelf.
> > 
> >   Each base system contains the following.
> > 
> >     o A KA6nn-AA (L4002-nA) CPU module, located in slot 5.
> >     o From one to four MS690-BA/-CA/-DA memory modules
> > 
> > so yes, you can.
> 
>   Excellent...thanks!

What bus are these?  I saw a cpu on ebay and it did not look like
Qbus.  It it Mbus or something strange?

Bob