The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2000
Filed:
Oct. 09, 1997
Thomson Training & Simulation Limited, Crawley, GB;
Abstract
A multi-processor computer system comprises one or more CPUs (1) connected to a host computer (2) via a common PCI bus system backplane (3). The host computer (2) comprises a host microprocessor and associated memory unit and each CPU comprises a local microprocessor (5) having a local bus (15), an associated local memory unit (6), and a PCI connector (9) connected to the PCI backplane. Each CPU (1) further comprises a bridge (7) having at least two decoders installed between the CPU local bus (15) and the PCI connector (9) and providing an interface between the local microprocessor (5) and the associated local memory unit (6). A first decoder (A) of each bridge (7) is programmed to a first address range for access to the respective local memory unit (6) by the associated local processor (5), and a second decoder (B) of each bridge (7) is programmed to a second address range for access to the same physical memory of the memory unit (6) by another microprocessor (5) of the system. The same first address range and different second address ranges are allocated to each associated memory (6). Each microprocessor (5) of the computer system can access the entire PCI memory space comprising the memory units associated with all microprocessors (1) of the system.