Re: Industry Standard Bus?
There was a book released by DEC that told you how to design interfaces to connect to the UniBus in the proper way. Along with the Schematics that cam with the Systems, yes Unibus was propetary but it was darned easy to build an interface for and DEC didn't stop you doing it. We had a dodgy interface that messed up all the DEC disgnostics even if it was placed after a Bus Repeater so we made sure that it was always disconnected when their Field Service came to do a PM on the 11/45 we were using.
Them were the days.