Patent ID: 6927873

Claim:
An initiator which transmits, to a target, an instruction of a first type for instructing the target to read data from a designated position in a storage area of the initiator and an instruction of a second type for instructing the target to write data to a designated position in the storage area of the initiator, the initiator comprising: a first transmission unit arranged to, in reponse to a received completion message indicating completion of a read by the target of data from a designated position in the storage area of the initiator in response to an instruction of the first type transmitted to the target, transmit to the target another instruction of the first type, which is not yet transmitted to the target; and a second transmission unit arranged to, in responce to a received completion message indicating completion of a write by the target of data to a designated position in the storage area of the initiator in response to an instruction of the second type transmitted to the target transmit another instruction of the second type, which is not transmitted to the target, to the target.