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:
Jun. 27, 2000
Filed:
Mar. 27, 1998
Toshiteru Shibuya, Yamanashi, JP;
NEC Corporation, Tokyo, JP;
Abstract
A pipelined computer comprises a plurality of stages. An instruction subsequent to an operation mode changing instruction is held in a predetermined stage according to a type of the operation mode changing instruction. For example, if the instruction is the one subsequent to an ICP (Instruction mode Change to Privilege) instruction, it is held in an instruction decode stage where a privilege exception is detected. If the instruction is the one subsequent to an ACS (Addressing mode Change to Secure) instruction, it is held in an address adding stage where an address computation is performed. Moreover, if the instruction is the one subsequent to an ACD (Addressing mode Change to Direct) instruction, they are held in an address translation stage where an address translation is performed. These holdings are released after the operation mode changing instruction is completed. Furthermore, if the subsequent instructions are the ones which are not affected by the operation mode changing instruction, the subsequent instruction may be controlled so as not to be held.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile