| 摘要 |
PURPOSE:To prevent a bank of a memory from having unnecessary idle time, by providing a busy line for sending a sinal showing that a bank of the memory device is in operation in the time slot after next. CONSTITUTION:A basic processor 1, channel controller 2, and main memory device 3 are used by a bus 4 on time-division basis. For this purpose, bank next busy lines 16 and 17 are provided to transmit signals showing that banks 5 and 6 of the memory device 3 are in operation in the time slot after next. On confirming the signal from the busy lines 16 and 17, a device which is to access the banks among plural device sends out an access request signal to its bus request line. |
