CACHE PREDICTING PRELOAD DEVICE AND MICROCOMPUTER AND ELECTRONICS

PROBLEM TO BE SOLVED: To provide a cache predicting preload device for improving the performance of cache at low costs, and a microcomputer including this device, and electronics. SOLUTION: This cache predicting preload device is provided with an execution address history table 10 for holding the history of the execution address of an instruction, a cache failure history table 20 for holding information related with a cache reading address read in a cable in the cache failure by relating it with the execution address of the instruction by the prescribed number before the generation of the cache failure and a circuit for reading data stored in the cache reading address held in the cache failure history table 20 so as to be related with the execution address to a line buffer 30 when the execution address of the instruction is made coincident with the execution addresses of the instruction by the prescribed number before the generation of the cache failure.