Computer system having a selectable memory module presence detect information option
US5539912A · kind A · utility
19Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1994 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Jul 22, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0684
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A personal computer has two possible memory sizes differing by the maximum number SIMMs that can be installed. Each SIMM stores presence detect bits indicating the size and speed of the SIMM. An I/O controller includes a memory detect port which is used to read the presence detect bits from the SIMMs. The controller further includes a logic circuit that is set in accordance with the memory size to selectively control driving the presence detect bits or empty socket bits onto a data bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.