Method and apparatus for on-the-fly multiple display mode switching in high-resolution bitmapped graphics system

摘要: A RAMDAC circuit drives a display device so as multiple modes of color depth and resolution in single frame without sacrificing the higher-resolution mode, adjusts output pixel rate to match that mode being on pixel-by-pixel basis. The switches between two graphics on-the-fly basis accordance with control bits stored data. Furthermore, rates such amount video memory used for any predefined screen area remains constant even though are dynamically adjusted. In preferred embodiment signal is embedded data data, including signal, comprises one byte each when specifies first bytes second mode.