CTI BUS
From Computer History Wiki
The CTI BUS (Computing Terminal Interconnect Bus) was developed for and used on the Professional 300 Series of DEC PDP-11 personal computers solely. It seems to be a variant form of a QBUS, with some additional signals, carried on a connector with a different physical form factor (a 90-pin zero-insertion-force connector, of which the first 60 pins are used for the CTI BUS).
External links
- Professional 300 Series Technical Manual (EK-PC350-TM-001) - see Sections 5.3.3, "Buses", and 7.2.1.1, "CTI BUS Interface Circuits"