| 摘要 |
<p>PURPOSE:To avoid an error of the data transfer, by waiting the initialization of a device until the transfer of a data block is over in case a request is given to an initialization of the device during the transfer of data. CONSTITUTION:Various types of signals CNTL are delivered for read/write control to an external storage device from a data transfer controlling circuit 101. In this case, an inspection is given to the presence or absence of the initialization request (INZ) signal for initialization of a device. Thus the CNTL signal is delivered in case no INZ signal exists. If the INZ signal exists, the output of the CNTL signal is inhibited by the circuit 101. At the same time, the initialization signal CLR is delivered for initialization of device with a delay of transfer time equivalent to a sector from a delaying circuit 102. As a result, no initialization is carried out for a device during a transfer of data although an initialization request is given. Thus the initialization is carried out after the data of a sector has been transferred.</p> |
