Programmable logic array for generating EOR sums of input signals

摘要

A programmable logic array (PLA) is achieved by taking various EOR sums of programmable AND term generator output signals. The EOR term generator receives externally applied logic constant signals on respective logic constant signal lines. Each logic constant signal line is coupled to the AND term generator outputs by a plurality of EOR elements which are either connected in series and controlled by different AND terms or cascaded in tree-like fashion.