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:
Sep. 24, 1996
Filed:
Dec. 16, 1994
James F Macon, Jr, Boynton Beach, FL (US);
David Medina, Boca Raton, FL (US);
Mark A Peloquin, Boynton Beach, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Methods and apparatus provide external interrupt serialization compatibility for a multiprocessing environment so that software written to run in a uniprocessor environment can run without degradation caused by inadequate or improper handling. When a processor receives an external interrupt, the interrupt manager will acquire an external interrupt spinlock. Once acquired, the interrupt manager will transfer control to the external interrupt service routine and upon return from that routine, the interrupt manager will release the external interrupt spinlock. Also, protection of processor execution state in a multiprocessor environment is provided using the same spinlock.