I have a Diablo 30 and I need cables for it. I've been told that it can be used with the PDP-8 but I need to find out which interface it requires. -- 2.5 mb Diablos are RK02's. You'll find the adapter schematic in the RK11-C engineering drawings. It has a Winchester brand connector on one side and a Unibus paddle on the other. Either a Diablo or DEC Unibus terminator in one of the adapters can be used for termination. The difficult cable to find will be the one from the RK8E to the drive DEC PN in the RK8E drawing set.