The integrated drawing processor handles the image data that cannot be processed at a required rate by transferring the image data to a non-real-time path unit from an operation processor through an operation processor interface, where the data is processed. Thereafter, the data is transferred through the operation processor interface to the address of a designated storage unit. The transferred data is processed by the operation processor interface necessary, or repeatedly processed by the non-real-time path unit, or transferred to the real-time path unit, and fmally transferred to an output device. The image data that can be processed at the required rate is transferred directly to the real-time path unit through the operation processor interface. The image data transferred to the real-time path unit is outputted to the output device through an output device interface. The drawing processor makes it possible to perform the essential function of the image processing and the auxiliary accelerating function with hardware of a small circuit scale.