An image display control apparatus designed to reduce the memory capacity and the cost. The apparatus designates a display area for image data to be supplied to an image display device to first and second frame memories for respectively storing first and second image data in association with horizontal and vertical coordinates, and moves the designated display area in a predetermined direction in accordance with a scroll instruction. Image data of the designated display area is read out from the first and second frame memories, and third image data is written in that part of the designated display area of the first and second frame memories from which image data has been read out.