Entry level data processing system which is expandable by a factor of two to a partitionable upgraded system with low overhead
US5446848A · kind A · utility
Inventors
Key dates
| Filing date | Jun 25, 1993 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Jun 25, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4068
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An entry level data processing system is expandable, with low overhead, by a factor of two to a partitionable upgraded data processing system. This entry level system includes: 1) one system bus, 2) a central processing module (CPM), an input/output module (IOM), and a system control module (SCM)--all of which have one system bus port coupled to the system bus, 3) a memory module coupled via a memory bus to the system control module, and 4) a system expansion interface through which the entry level system is expanded to the upgraded system. In one particular preferred embodiment, the system expansion interface consists of a) a first connector on the SCM for externally connecting to and communicating with the memory bus, b) a second connector on the SCM for externally connecting to and communicating with the system bus, and c) an extension of the system bus through a switch in the SCM and a third connector on the SCM for externally connecting to and communicating with the extended system bus. To expand the entry level system to the upgraded system, a duplicate copy of the entry level data processing system as recited in 1-4 above is added along with a respective three port bus expan…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.