Microvax 3100 95 on ebay Buy-it-Now for $80+$35

[Eric Dittman]

> > > > Of course, it could be worse - if it was a 4000/100
> > >
> > > A 4000/10x is the same as a 3100/9x. The difference is only the
> > > firmware. Or even worse a bit somewhere in the NVRAM.
> >
> > It's just a bit in the firmware, and the DSSI daughterboard.
> 
> Umm, and the 4000/10x has the ability to hook QBUS gear up to it... 
> which I *do* actually care about in a VAX. (UNIBUS is useful too.)

It's been a while since I looked in my 4000/100A, but isn't the QBUS
interface built-in on the motherboard?  If so, the 3100/9x could hook
up to QBUS if you had a set of cables and changed the bit in firmware.
-- 
Eric Dittman
dittman at dittman.net