DMA device with local page table
US5864876A · kind A · utility
41Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Jan 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A DMA device which can quickly access main memory over a system bus without requiring an allocation of a contiguous block of memory on start-up. This is accomplished by providing a copy of the host microprocessor's page table to the DMA device for the portion of memory allocated to it. The DMA device preferably stores at least a portion of the page table internally, with any remainder of the page table being stored in main memory at an address stored in said DMA device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.