BLINK INDICATION IN GRAPHICS MODE.

In a color graphic display, characters superimposed on a graphics image can be blinked on a screen by periodically rewriting contents of palettes. As shown a display adapter includes four all-points-addressable planes, i. e. , R, G, B and work planes. Graphics and character data are stored in the R, G and B planes. The work plane is normally used to store some data in a graphics drawing operation. Further, the Work plane is used to store '1' bits at locations corresponding to those in the R, G and B planes where data for characters to be blinked are stored.