DATA PROCESSOR AND INTERRUPTION CONTROLLER

摘要

PURPOSE:To display a graphic while smoothly moving it when the moving speed of a pointing device is increased in a data processor for displaying a graphic on a screen by means of a central processing unit(CPU) based upon an interruption command outputted from the pointing device. CONSTITUTION:When the moving speed of the pointing device 11 is increased, a speed detecting means 12 generates a pulse string whose period is shortened in accordance with the increment of the speed and a display command means 9 inputs an interruption command corresponding to the pulse string to the CPU 5. Thereby when the moving speed of the device 11 is increased, the interruption processing of graphic display is repeated at a short period and the graphic is displayed as if it is smoothly moved on the screen.