| 摘要 |
PURPOSE:To transfer data efficiently between a video memory and a display of each processing element by exchanging data between a video bus and the video memory. CONSTITUTION:A pixel counter 4 shows an address of a video memory 5. When a pixel clock CLK is inputted under the condition where a signal WIND is under the condition of the logic ''1'', an AND circuit 25 supplies a clock to the pixel counter 4. When a clock is inputted, a counted value of the pixel counter 4 is counted up. When the signal WIND is in the logic ''1'', a counted value of the pixel counter 4 turns out an address of the video memory 5. Under the condition where a write-enable signal WE specifies writing, picture data on a video bus is written on the video memory 5. Then, when the signal WE specifies reading out, readout data from the video memory 5 are outputted to the video bus. |
