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, 1982
Filed:
Apr. 26, 1979
Naoki Yamada, Hadano, JP;
Kenichi Wada, Zama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A data processing system using a store data buffer control device includes plural store data buffers and the data from a processor is temporarily stored in the store data buffers and then transferred to a memory. A shift register is used to trace the storing requests from the processor so that the storing requests re-executable in the instruction re-execution taking place at the time of a fault occurring are distinguished from the storing requests not re-executable in the same operation. The data held in the store data buffers corresponding to the re-executable requests is invalidated while the data held in the store data buffers corresponding to the non-re-executable requests is kept valid.