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:
Jan. 25, 2011
Filed:
Feb. 19, 2008
Toru Morikawa, Osaka, JP;
Jiro Miyake, Osaka, JP;
Hiroyuki Mizohata, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
When an interruption instruction occurs in an information processing apparatus including a CPU and a coprocessor, execution of a single dedicated instruction 'GETACX Dm,Dn' performs saving of necessary data from all registers. 'Dm' is a value output from a general register groupto a first data input bus. Each of calculation units implemented in a coprocessorrecognizes a value stored therein. If a value “Dm” specifies one of the calculation units, the specified calculation unit outputs, to a selector, data stored in a register included in the specified calculation unit. An implemented calculation unit information output circuitstores therein the count of the calculation units implemented in the coprocessor. If a value of the first data input busis greater than the count of the calculation units, the implemented calculation unit information output circuitoutputs a value “1” to a flag register. Based on the fact that the value stored on the flag registeris “1”, a CPUrecognizes that saving of the data from the register has been completed.