| 摘要 |
PURPOSE:To make data transfer with a dispersion processing system which can make real time processing possible, by installing two memories of write-only and readout-only between asynchronously operating two processors. CONSTITUTION:The port-A 21A and port-B 21B of a memory 21 for transfer are alternately switched to the access mode from a processor 1 and data transfer mode from processors 1 and 2 to readout-only memories ROM 21b and ROM 21d. By periodically switching the parts 21A and 21B by means of a switching signal outputted from the opening-closing mode switching signal generating circuit 55 of each gate 41-46, data written in write-only memories 21a and 21b from the processor 1 are transferred to the ROMs 21a and 21b in the period of copy mode and it becomes possible to read out the transferred data in and after the next access mode. |
