ARITHMETIC PROCESSOR, INFORMATION PROCESSOR AND CONTROL METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To inexpensively and easily apply an arithmetic processor to a plurality of systems and to finely execute priority control to trap requests on the side of an execution unit. SOLUTION: The arithmetic processor has a read/write control part 260 which stores selection data SELA1for selecting one trap map corresponding to an operating system to which the arithmetic processor should be applied among trap maps 2200, 2201which suit at least a first operating system, a second operating system in a trap map selection register 240 and a trap type encoder 210 which encodes a trap request 71 from the execution unit such as an integer arithmetic unit 10 to a trap type encoder 231 according to the trap map 2200(or the trap map 2201) corresponding to the selection data SELA1. COPYRIGHT: (C)2008,JPO&INPIT