| 摘要 |
PURPOSE:To improve the efficiency of address conversion processing at the time of the occurrence of mishit in different pages by providing access systems on the instruction side and the operand side independently of each other and performing the access and the conversion processing in parallel. CONSTITUTION:When a dynamic address conversion mechanism (OA-DAT) 22 receives an operand-side address conversion request, a signal OA-DAT-GO is returned to an operand address conversion buffer 231. An instruction dynamic address conversion mechanism (IA-DAT) 12 and the OA-DAT 22 perform the parallel address conversion processing. Conversion results of the OA-DAT 22 and the IA-DAT 12 are selected by a selector 3 independently of each other at the time of the end of conversion processing, and conversion results and respective completion signals are sent to the address conversion buffer 21. When an instruction-side address conversion request is issued, the IA-DAT and the OA-DAT are used to perform the duplicate processing of address conversion between instructions at the time of the occurrence of mishit in an instruction address conversion buffer 11. |
