| 摘要 |
PURPOSE:To shorten initializing time by writing initializing data in all of plural storage devices during the existing period of an initializing signal. CONSTITUTION:A power supply rise detecting circuit 5 turns an initializing signal 107 to '1' power supply rise detecting timing and a selecting circuit 4 receiving the signal 107 selectively outputs the output 104 of a face switching stopping circuit 2. Thereby, all the n storage devices 6-1 to 6-n set up to writable states and initializing data on a data bus 109 are successively written in the n storage devices from its leading address. Namely, all the n storage devices are uniformly access and simultaneously initialized without switching them during the '1' period of the initializing signal 107. The period is the same as the initializing period of one storage device. Consequently, the initializing time can be shortened and a time required until the device can be started after turning on a power supply can be shortened. |
