Daisy-chained serial shift register for determining configuration of removable circuit boards in a computer system
US5287531A · kind A · utility
96Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0684
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for determining system configuration in a computer system using only one 8 bit data port. Permanent connections on each of the microprocessor and memory boards provide respective configuration and/or memory information about each board. The signals are stored in serial out shift registers associated with each board that are daisy chained together. These shift registers serially transmit the configuration information to one 8 bit data port, which then transmits this information to the computer system in 8 bit increments. If a given slot is empty it is automatically bypassed in the shift register daisy chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.