| 摘要 |
PURPOSE:To attain the high speed of the painting-out processing of a graphic. CONSTITUTION:A processor 152 sets a boundary color at a read data register 153, sets a painting-out color at a write data register 154, selects the address of a picture display memory 157, and outputs a reading command to a read and write control circuit 156. A comparator 155 compares the pixel of the picture display memory 157 whose address is selected with the boundary color set at the read data register 153, judges whether or not the boundary color is included in the pixel, and outputs a boundary detection signal A5. When the boundary detection signal A5 is off, the read and write control circuit 156 writes the painting-out color set at the write data register 154 in the pixel. |
