 The 8568 embodied many of the features of the older 6545E monochrome CRT controller plus RGBI color.The original ("flat") Commodore 128 used the 8563 video controller to generate the 80 column display.The 8568 was essentially an updated version of the 8563, combining the latter's functionality with glue logic that had been implemented by discrete components in physical proximity to the 8563.