Processor having operating modes for an upgradeable multiprocessor computer system
US5781774A · kind A · utility
69Cited by
9References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1996 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Sep 3, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4072
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processor for an upgradable system is disclosed having a type pin that indicates whether the processor is coupled as an OEM processor in a single processor or a dual processor computer system or as an upgrade processor in the dual processor computer system. The type pin causes the appropriate enable and disable of a cache coherency mechanism and a bus arbitration mechanism in the processor and coordination of a dual processor boot-up handshake.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.