Browse Prior Art Database

MULTIPLE INTERNAL BUS RESERVATION SNOOPING IMPLEMENTATION

IP.com Disclosure Number: IPCOM000008907D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Jul-23

Publishing Venue

Motorola

Related People

Authors:
Tony Thompson Ajay Nath Bart Martinec Guruswamy Ganesh

Abstract

A cost-effective reservation snoop mechanism for a bus interface unit with multiple bidirectional buses and the capability of handling reservation des- tinations on all buses. A reservation can only be set from one of the buses but the reserved memory location can be on any bus. Further, the reserved location can be 'touched' by a write access originat- ing on any bus. Thus the mechanism must support all source/destination combinations for the intruding write cycles. Writes by the bus master that originally set the reservation are to be ignored.