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:
Aug. 05, 2014

Filed:

Sep. 09, 2011
Applicants:

Rong-guey Chang, Chia-Yi County, TW;

Yuan-shin Hwang, Chia-Yi County, TW;

Chia-hsien Su, Chia-Yi County, TW;

Inventors:

Rong-Guey Chang, Chia-Yi County, TW;

Yuan-Shin Hwang, Chia-Yi County, TW;

Chia-Hsien Su, Chia-Yi County, TW;

Assignee:

National Chung Cheng University, Chia-Yi County, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/30 (2006.01);
U.S. Cl.
CPC ...
G06F 9/30 (2013.01);
Abstract

A segmental allocation method of expanding RISC processor register includes the steps of a) setting an instruction format of the RISC processor, the destination register field being set having 6 bits to correspond to 64 registers and at least one source register field having at least 4 bits to correspond to at least 16 registers; b) providing two solutions to the problem resulting from that the instruction format in the step a) goes beyond range under some circumstances; and c) setting a register segment allocation algorithm having the steps of c1) providing and grouping a plurality of pseudo registers; c2) prioritizing the pseudo registers in each of the groups; c3) combining the groups pursuant to the priorities thereof; and c4) locating the physical register of lowest computational cost.


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