Sellam wrote: > Qbus is "segmented", each segment having 4 quad slots. At least this is > what I've observed. So the system I'm working with now has two 4-slot > quad bus segments, for a total of 8 quad slots. DEC considers one Qbus backplane to be one segment. If you have two separate Qbus backplanes cabled together, that would be two segements. Eric