CALCULATOR AND TLB CONTROL METHOD

A calculator includes a main TLB that stores therein a plurality of address translation pairs indicating a correspondence of a virtual address and an absolute address as a page table and a micro TLB that stores therein part of the page table stored in the main TLB. In the micro TLB, a TLB virtual address [63:13] and a TLB absolute address [46:13] are registered in a correlated manner. With such configuration, when registering an address translation pair in the micro TLB, the calculator chops the address translation pair to a page size of a first size or a fourth size to register it in the micro TLB. Upon receiving an address translation request, the calculator searches for an address corresponding to the page size of the first size or the fourth size registered in the micro TLB, so that address comparison conditions can be reduced, enabling to improve a processing performance.