Software direct memory access
US6668287B1 · kind B1 · utility
24Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1999 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Dec 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/32
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and a method for generating an interrupt when a direct memory access by an I/O device is desired, suspending the operation of the microprocessor in response to the interrupt, placing state of the morph host to a last known correct state in response to the interrupt, determining the memory operation commanded by the I/O device, and utilizing the microprocessor to execute the memory operation commanded by the I/O device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.