Simple, Versatile CAMAC Crate Controller and Interrupt Priority ENC Oding Module

A simple, versatile crate controller has been in use in CAMAC installations at SLAC for several years. Its design is based upon the criteria of minimum circuitry to connect seven CAMAC crates together on a "SLAC branch". A priority encoding module to rapidly identify interrupt sources has been designed to work in conjunction with this crate controller for high rate interrupt environments. The concept is applicable to the standard branch as well.