DEVICE FOR ADDRESSING INTERNAL MEMORY OF CENTRAL PROCESSING UNIT

摘要

PURPOSE: A device for addressing an internal memory of a central processing unit is provided to address so as to easily use a data without previously assigning a page point value every time when a page of a specific memory is used. CONSTITUTION: The device includes an address comparing data register(10), a page point register(20), a comparator(30), a multiplexer(40) and a memory device(50). The address comparing data register stores a predetermined address comparing data which is previously established. The page point register stores points of the pages. The comparator compares internal addresses of the inside of the CPU and address comparing data transmitted from the address comparing data register and generates a comparing signal. The multiplexer outputs one of the upper bits and the lower bits of the page point register as a page address in response to the comparing signal generated by the comparator. The memory device accepts the page address transmitted from the multiplexer and the internal addresses of the inside of the CPU.