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1. (WO2001006382) SOFTWARE FIFOS IN A MULTIMASTER BUS SYSTEM

Pub. No.:    WO/2001/006382    International Application No.:    PCT/NO2000/000242
Publication Date: Fri Jan 26 00:59:59 CET 2001 International Filing Date: Thu Jul 20 01:59:59 CEST 2000
IPC: G06F 15/167
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON
SVELMOE, Geir, Robert
Inventors: SVELMOE, Geir, Robert
Title: SOFTWARE FIFOS IN A MULTIMASTER BUS SYSTEM
Abstract:
The present invention relates to communication of data between two parties in a multi master bus system, like PCI bus or VME bus, using shared RAM. The parties may comprise two CPUs, two SW processes executing on the same processor, or a SW process and an interrupt routine. In said RAM there is arranged a FIFO memory locally to each party. Each part may read from its local FIFO memory and write to the other party's FIFO memory only. In this way only write operations are performed on the bus.