Patent ID: 7451485
Filing Date: 2008-11-11
Classification: G06F

Abstract:
1. An information processing unit, comprising: a memory storing a program; and a program counter, wherein the information processing unit operates based on the program counter and executes instructions sequentially placed at addresses pointed to by the program counter, wherein a second conditional branch instruction is written at a second address subsequent to a first address where a first conditional branch instruction is written in the program, wherein the information processing unit branches into an operation B if a condition flag is a predetermined value in execution of the first conditional branch instruction, wherein the information processing unit proceeds to the second conditional branch instruction if the condition flag is not the predetermined value in execution of the first conditional branch instruction, wherein the information processing unit branches into an error processing if the condition flag is the predetermined value in execution of the second conditional branch instruction, and wherein the information processing unit proceeds to an operation A if the condition flag is not the predetermined value in execution of the second conditional branch instruction.