Display control system

Details Display control system Display control system

G - Physics

09

G

375/4

G09G 3/22 (2006.01) G09G 5/391 (2006.01)

Patent

CA 1232381

ABSTRACT OF THE DISCLOSURE An improved display control system is disclosed which is capable of reducing the time necessary for executing its display operation. In this display control system, when a display memory is to be accessed, its software supplies values on the X, Y coordinates in a display screen and these values are then converted into the physical addresses of the memory. For this purpose, a limit check function is provided. Also, an X register for setting up values on the X coordinate in a display unit is formed of a counter, thereby eliminating the need for setting the values on the X coordinate each time. The display control system is also capable of dealing with the change of a plurality of screen configurations in the above-mentioned X, Y coordinate system.

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