Storage controller, storage controlling method and stored program media

The present invention discloses a memory control apparatus and memory control method, and a medium storing a program transfer-target unit (11) outputs data read and write commands related. Initially the number of transferred bytes address generation unit (12) generates a control signal according to a command, and outputs the read. Command generating means (13) controls the synchronous memory (15) after generating the control signal in accordance with a control command. Command generating means (13) controls the number of bytes transferred after the determination, so that performing the high efficiency of data transfer command. The data processing unit (14) according to the control command as a data transfer intermediary between the transfer-target unit (11) and the synchronous memory (15).