Address translation method and apparatus therefor
US4992936A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1988 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Nov 9, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/652
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method and apparatus wherein a logical address of a main storage designated by a program is translated into a real address: an address translation table for each of a plurality of address translation sizes is prepared; the logical address designated by the program is fetched; an entry of an address translation table whose address translation size is larger than those of the other address translation tables among the plurality of address translation sizes is first identified based on the fetched logical address; a first information on an address translation size validity included in the first indentified entry is checked; address translation in units of translation size of the address translation table including the first identified entry is performed when the first information indicates valid; when the first information indicates invalid, an entry of an address translation table whose address translation size is next smaller than that of the address translation table including the first identified entry is second identified, based on the top address of the address translation table including the second identified entry and based on the fetched logical address; and address tran…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.