Interprocessor communication for a fault-tolerant, mixed redundancy distributed information processing system

摘要

A method for resolving access contentions by a plurality of processing sites having the same or different redundancies to a shared communications system wherein the start of the access contention process is first synchronized for all contending sites. A determination is then made of which sites are performing tasks of the highest criticality level and a subsequent determination is made as to which of such highest criticality sites has the highest priority level. Access is then provided to the site having the highest priority level.