Instruction prefetch device forecasting branch direction
专利汇可以提供Instruction prefetch device forecasting branch direction专利检索，专利查询，专利分析的服务。并且PURPOSE:To improve the probability of a forecast in an information processor by storing a pair of a branch direction and an address to be branched in a branch history table, forecasting an address to be branched from the past result, and if the executed branch direction does not coincide with the forecasted, result updating the branch information. CONSTITUTION:The branch history table 410 stores a part of the address of a branch instruction, V bits indicating whether the contents are effective or not and the address to be branched which corresponds to the contents. The contents of an instruction address register 411 index the table 410, which checks whether the address of a branch instruction to be prefetched is registered or not and outputs the checked result to a signal line 106. If registered, the corresponding address to be branched is read out to a signal line 105. On the other hand, the address of the executed branch instruction generated through an instruction storage device 408 and an instruction decoding device 403 is stored in a register 402 and a checking circuit 420 checks the coincidence of the contents of the register 402 with that of a register 418 storing forecasted information, and in case of inconsistency, the contents of the table 410 are updated by the contents held in a register 423.，下面是Instruction prefetch device forecasting branch direction专利的具体信息内容。
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