Virtual I/O emulator in a mainframe environment
US6453277B1 · kind B1 · utility
7Cited by
10References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1999 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jan 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/105
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system of emulating an input/output (I/O) device in a mainframe environment. A started task executing as part of the operating system gains control of I/O instructions directed to virtual devices by insuring that such I/O instructions cause interrupts. The started task then hooks the branch point for such interrupts. Upon obtaining control, the started task causes the I/O source to believe a transaction with a predefined data space in a general storage area on board the mainframe is actually a transaction with a physical device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.