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:
Mar. 02, 2004
Filed:
Nov. 22, 1999
Peter Gustafsson, Lund, SE;
Fredrik Wendel, Flyinge, SE;
Telefonaktiebolaget LM Ericsson(Publ), Stockholm, SE;
Abstract
A method for simultaneous start-up of a plurality of processors in a multiprocessing system is disclosed, whereby a special hardware register (e.g., “WhoAmI register”) can be shared by the plurality of different processors. Alternatively, a separate WhoAmI register can be provided for one or more of the different processors. When a processor performs a read operation on a WhoAmI register, the register returns an identification number associated with that processor. Consequently, this processor can perform a set of test and jump instructions to access and execute the appropriate start-up code for this processor. Other embodiments disclosed include a method for distributing interrupts in a multiprocessing system, a method for bus arbitration in a multiprocessing system, and a method for creating atomic instructions that can be used for synchronization in a multiprocessing system.