U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

System and method for synchronizing multiple processors during power-on self testing

Patent 5768585 Issued on June 16, 1998. Estimated Expiration Date: Icon_subject November 21, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Boot framework architecture for dynamic staged initial program load
Patent #: 5379431
Issued on: 01/03/1995
Inventor: Lemon, et al.

Distributed multi-processor boot system for booting each processor in sequence including watchdog timer for resetting each CPU if it fails to boot
Patent #: 5450576
Issued on: 09/12/1995
Inventor: Kennedy

Information processing system having a configuration management system for managing the software of the information processing system
Patent #: 5619716
Issued on: 04/08/1997
Inventor: Nonaka, et al.

Network backplane interface having a network management section for managing and configuring networks on the backplane based upon attributes established in a parameter table Patent #: 5649100
Issued on: 07/15/1997
Inventor: Ertel, et al.

Inventors

Application

No. 561627 filed on 11/21/1995

US Classes:

713/2Loading initialization program (e.g., booting, rebooting, warm booting, remote booting, BIOS, initial program load (IPL), bootstrapping)

Examiners

Primary: Kriess, Kevin A.

Attorney, Agent or Firm

International Class

G06F 009/06

Abstract

A method for synchronizing testing of shared memory contained in a multi-processor computer system after reset. The method involves the steps of performing a wake-up procedure by a bootstrap processor on the other processors. Thus, the other processors can assist in testing the shared memory. Next, respective portions of the shared memory are allocated to each of the processors. Finally, upon completion of testing of its respective portion of the shared memory, each processor sets its unique storage unit synchronizing the processors at completion.

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