The LUCAS project (Lund University Content Addressable System) is an attempt to design and evaluate a highly parallel system while still keeping its size within the limits necessary for a university research project. The main objective of LUCAS design and implementation was to allow a research vehicle for the study of architectural principles programming methodology and applicability of associative array processors. With certain principles and design details fixed (such as bit-serial working mode and the use of conventional memory circuits), the implementation of LUCAS allowed modification of architecture parts to suit certain applications. These parts include the network that interconnects the processing units, the input/output system, and the instruction sets at different architectural levels.
Read more at http://ebookee.org/LUCAS-Associative-Array-Processor-Design-Programming-and-Application-Studies-Lecture-Notes-in-Computer-Science-_1051220.html#VHSer8quc2GircBu.99