| 摘要 |
PURPOSE:To draw a straight line to a stagger grid array type memory at a high speed by switching the data buffers when the blocking to one of two data buffers together with the write of data into an external memory from the other data buffer are completed. CONSTITUTION:An external memory serves as a stagger grid array type memory using four RAMO - 3. This memory is provided with a pair of buffers 4 and 5 that can store the linear data drawn with a single access. Then both buffers 4 and 5 are switched to each other after the linear data is written into the stagger grid array type memory from one of both buffers and then stored in the other buffer. Thus the linear data can be drawn to the memory at a high speed. |
