Re: Not only Unibus
Likely, yes. Unibus is a system bus, into which you wedge the interface boards; Massbus was one of the storage buses. If you had RM or RP series disks and/or TM series tape drives you were running Massbus. But AFAIK none of the RP disks had butt-accessible offline buttons. If you wanted that option you'd be looking at the RM03/RM05, or one of the RK series.
Massbus cables were quite substantial, with a little over 60 twisted pair signals.
Biting the hand that feeds IT
