CRT9021B - CRT Video Attributes Controller

(VAC) is an n-channel COPLAMOS MOS/LSI device reverse video character block.

• o On chip video shift register (28.5 MHz max. ) o On chip attributes logic Reverse video Character blank Character blink Underline Full/half intensity o Four modes of operation Wide graphics Thin graphics Character mode without underline Character mode with underline o On Chip logic for double height/double width characters o Accepts scan line information in parallel or serial format o Four cursor modes dynamically selectable via 2 input pins Underline Blinking underline Reverse video Blinking re.