| 摘要 |
PURPOSE:To simplify the readout control means and to increase the processing speed, by comparing the address input to the physical address register with the address input to the specific region. CONSTITUTION:In case of control at virtual address mode, if the request to memory is present, the logic address is input to the logic address register 1 and the page part is set to the page section of the physical address register 12. In this case, the in-page address part of the virtual address is set to the in-page section in the physical address register 12. Further, it is compared with the physical address in the specific area of the comparison address register 11 at the comparator 8, and when in agreement, the control signal is produced and control is made. Further, in the control of real address mode, since the physical address is input to the logic address register 1, the page part of this physical address is set to the physical address register 12 as it is, allowing similar comparison control. |
