| 摘要 |
<p>A plurality of picture RAMs (32R, 32G, 32B) are synchronously accessed by a CRT controller (35), and the priority levels of the outputs from the picture RAMs (32R, 32G, 32B), are specified by priority specifying means (34). A priority circuit (33) inputs thereinto the outputs of the picture RAMs (32R, 32G, 32B) and selects the Inputs in accordance with the specified priority levels for output to a color display (37). The color display (37) displays, on its CRT screen, graphic forms in colors determined by a combination of the picture RAMs (32R, 32G, 32B). A feedback circuit feeds the output of the priority circuit back to the picture RAMS (32R, 32G, 32B), and data update control means (39) which specifies which one of the picture RAMs (32R, 32G, 32B) is to be rewritten with the output of the feedback circuit are provided. By hardware processing, the stored content of a desired one of the picture RAMs (32R, 32G, 32B) is thus rewritten with the output of the priority circuit (33).</p> |
