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.

Date of Patent:
Mar. 20, 2001

Filed:

Oct. 06, 1998
Applicant:
Inventors:

Shumpei Kawasaki, Tokyo, JP;

Eiji Sakakibara, Kodaira, JP;

Kaoru Fukada, Koganei, JP;

Takanaga Yamazaki, Kodaira, JP;

Yasushi Akao, Kokubunji, JP;

Shiro Baba, Kokubunji, JP;

Toshimasa Kihara, Tachikawa, JP;

Keiichi Kurakazu, Tokorozawa, JP;

Takashi Tsukamoto, Kodaira, JP;

Shigeki Masumura, Kodaira, JP;

Yasuhiro Tawara, Kodaira, JP;

Yugo Kashiwagi, Koganei, JP;

Shuya Fujita, Kodaira, JP;

Katsuhiko Ishida, Koganei, JP;

Noriko Sawa, Tama, JP;

Yoichi Asano, Tokyo, JP;

Hideaki Chaki, Tokorozawa, JP;

Tadahiko Sugawara, Kodaira, JP;

Masahiro Kainaga, Yokohama, JP;

Kouki Noguchi, Kokubunji, JP;

Mitsuru Watabe, Ibaragi, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
G06F / ;
Abstract

A branch instruction format has different respective field lengths for conditional branch instructions and unconditional branch instructions. A conditional branch instruction has a first bit length and a first area for a displacement designating an address to be jumped, wherein the first area has a second bit length that is smaller than the first bit length. An unconditional branch instruction also has the first bit length, and a second area for a displacement designating an address to be jumped, wherein the second area has a third bit length that is different from the first and second bit lengths.


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