| 摘要 |
PURPOSE:To write the same pattern data to plural pattern memories only by one transfer control by actuating writing selectors corresponding to respective pattern memories in accordance with a selection control signal and controlling the connection of writing control lines to the pattern memories. CONSTITUTION:The writing selectors 3a-3d connected in parallel to writing control lines 2a-2d for respective pattern memories 1a-1d in accordance with the memories 1a-1d are controlled through a selection control signal generating part 19 on the basis of a command from a transfer interface 13 connected to a CPU. Whether the control lines 2a-2d corresponding to the memories 1a-1d are to be connected or not is selected and the same pattern data can be written in plural pattern memories for a short time through a data bus 14 and an address bus 16 only by one transfer control. |
