| 摘要 |
PURPOSE:To shorten cycle time by securing such a constitution that a request device sends a reading instruction discriminating signal together with a reading action requesting signal and a memory interrupts its action to give the busy signal produced after the reading action is started to a priority circuit when said reading instruction discriminating signal is detected. CONSTITUTION:The request control circuits 1 and 2 of requesting devices 100 and 200 send the reading instruction discriminating signals 20 and 21 together with the reading action requesting signals. The busy control circuit 5 of a memory 300 detects both signals 20 and 21 and therefore interrupts the application of the busy signals 29 and 30 produced after a reading action is started to a priority circuit 3. In such a way, the reading cycle can be shortened after the reading action and the overall throughput of a memory is improved. |
