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Common Storage Accessing for Multiple Microprocessor System

IP.com Disclosure Number: IPCOM000051818D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Rust, LM [+details]

Abstract

A system having multiple microprocessor subsystems 1, 2, 3 (Fig. 1) accesses a common storage 4 over data and address busses 41, 42 whenever this storage is selected by a dot-OR control line 43. To avoid contention for storage cycles, each subsystem 1, 2, 3 uses interconnected enable outputs EN and inhibit inputs IN1, IN2 to enforce a priority hierarchy.