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PURPOSE:To improve the execution efficiency of an instruction when blocks coincide each other by temporarily reading an instruction word from the block which is read lastly in a succeeding set for a period till the succeeding block is detected at the time of jumping the block. CONSTITUTION:A block j...

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1. Verfasser: NISHIKUBO KENJI
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To improve the execution efficiency of an instruction when blocks coincide each other by temporarily reading an instruction word from the block which is read lastly in a succeeding set for a period till the succeeding block is detected at the time of jumping the block. CONSTITUTION:A block jump detector 113 generates a block jump signal 150 and a temporary read signal 151. Then, the instruction word which is temporarily read is stored in an F stage register 103 and a succeeding block number register 116 which a succeeding block number from a succeeding block detector 115. When the value of a temporary read block register 121 coincides with the value of the succeeding block number register 116, a pipe invalidating signal 152 is prevented from being generated from a dissidence detector 122, and accordingly a temporary read instruction is prevented from being invalidated, whereby a read operation is continued as it is. Thus, the instruction can be executed without interruption and the execution efficiency of the instruction is improved.