I am reliably informed (i.e. I've seen this working) that a x/200 series
VME case in fact has two separate buses, and two "non-bussed" slots. Into
this case, a friend of mine stuffed four 4/330 CPUs, which spoke to each
other as separate systems over Ethernet. Quite a system. This is why I am
in the market for just such a case.

Erik Fair