System for determining pluggable memory characteristics employing a status register to provide information in response to a preset field of an address
US5253357A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1991 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Jun 13, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0684
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system is described that includes an arithmetic logic unit that senses the presence of a circuit module in a connector, wherein one type of circuit module, if present, automatically provides a set of signals on a predetermined pin set that indicates characteristics of the circuit module. The system also includes circuitry that enables the determination of the presence of other types of pluggable circuit modules in the connector. The circuitry comprises a latch circuit for holding a received address for the circuit module. In the received address, a preset field of bits is present which identifies a field in a status register. The status register stores n fields of information defining the characteristics of the pluggable circuit module and is responsive to the preset field of bits to provide signals on the predetermined pin set indicating the information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.