Versatile CAMAC Crate Controller for Computer-Based Data Acquisition Systems

A crate controller that provides an economical interface between the CAMAC dataway and the I/O bus of computers such as the Lockheed MAC-16 has been designed. One such controller is required for each crate. The controllers are capable of transferring commands from the computer to a single module or to several modules in one or more crates simultaneously. They can also perform 16 or 24-bit word data transfers between the computer and an addressed module. In addition, parallel logic is provided for determining the complete address of the highest priority interrupt source. This includes the station number (L) of the interrupting module and the Look-at-Me (LAM) source within this module. Each controller is built in a double-width CAMAC module and is implemented with 135 integrated circuit packages.