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:
Jan. 20, 2004
Filed:
Oct. 04, 2000
Fujitsu Limited, Kawasaki, JP;
Abstract
When a normal interrupt occurs, data of processor operation before the normal interrupt are held in a normal return address register ( ), a normal previous state register ( ), and a normal factor register ( ). When a break-interrupt occurs, data of processor operation before the break-interrupt is held in another break return address register ( ). Hence, a break-interrupt can occur even within an interrupt inhibition period by a normal interrupt. Besides, when a break-interrupt occurs, the break-interrupt state is set in a flag register ( ). By referring to the flag register ( ) in executing an interrupt return instruction, the operation data before the break-interrupt or before the normal interrupt can accurately be restored.