Computer system for automatically reconfigurating memory space to avoid overlaps of memory reserved for expansion slots
US4931923A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1987 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Mar 13, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0661
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A personal computer system includes a main circuit board having a central processing unit and expansion slots each of which is adapted to receive a printed circuit board card. The main circuit board further includes memory, a 32-bit address bus with control signals associated therewith, and input/output circuitry. The slot is coupled to the 32-bit address bus, which is substantially a NUBUS bus, and the slot includes distinct identification line means which provide the slot with an identification number (distinct number) in the computer system. The computer system reserves 256-megabytes of memory space ranging from location $X000 0000 to location $XFFF FFFF for memory on a card in a slot having a distinct number equal to $X.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.