A method and a processor for parallel processing of logic event simulation on circuits comprising a polarity of logic gates, the logic gates having interconnect lines therebetween, the processor (1) further comprising a main processor (2) and an associative memory mechanism (3), the associative memory mechanism (3) comprising a plurality of associative arrays (5, 6) and at least one result register, and there is provided accessible external memory (4) in which a circuit representation may be stored and divided into a plurality of segments, each of the segments having a segment identifier, which in turn has segment data associated therewith. The segment identifier and segment data being stored in a segment table (14) in the associative memory mechanism. Each of the segments may then be brought into the associative memory mechanism (3) for evaluation one at a time. There is additionally provided an amended result registering mechanism (8) to allow numerous tests and gate pairs to be carried out and recorded.