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:
Feb. 12, 1991
Filed:
Dec. 27, 1988
Toshiharu Ohshima, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A data processing device having a buffer for prefetching a plurality of instructions. The buffer is constructed by including two switching areas and one common area connecting to one of the two switching areas. An unconnected switching area of the two switching areas is used exclusively for prefetching a destination instruction of a conditional jump instruction, so that the destination instruction is prefetched to the unconnected switching area by a switching operation. Thus flexibility is increased, when the jump instructions are continued. Further, a number of prefetching destination instructions is determined so that a bottleneck in an instruction process is avoided, and thus the capacity of the two switching areas is reduced the hardware scale is not enlarged.