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. 29, 2004
Filed:
Jul. 03, 1997
Toyohiko Yoshida, Itami, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A data processor being provided with a data register having a double width of the width of a general purpose register for inputting/outputting data with respect to the operand access unit, and a data transfer path which is composed of a plurality of buses between the register file and the data register and which simultaneously transfers two data, in which, in the case where an LDCTX instruction which is the instruction for loading data to more than two register is executed, a combined data of two data each of which is to be loaded in different register is transferred from the operand access unit to the data register, and high order 4 bytes of data and low order 4 bytes of in the data register are simultaneously transfers to two register through two data transfer paths, respectively, and in the case where an STCTX instruction which is the instruction for storing data from more than two register is executed, contents of the two registers are simultaneously transferred to a high order 4 bytes and a low order 4 bytes of the data register, respectively, and two data are combined into one data in the data register, thereafter the combined data is transferred to the operand access unit in one memory accessing.