Method and apparatus for providing enhanced data verification in a computer system
US5379342A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Jan 7, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/565
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A personal computer system compatible with application programs and operating system software. The personal computer system includes a microprocessor electrically coupled to a data bus, non-volatile memory electrically coupled to the data bus, volatile memory electrically responsive to the data bus and a direct access storage device electrically responsive to the data bus, the direct access storage device storing a second portion of operating system microcode. The non-volatile memory stores a first portion of operating system microcode and the direct access storage device stores a second portion of operating system microcode. The second portion of operating system microcode includes a boot program. The first portion of operating system microcode verifies the integrity of the boot program prior to loading the boot program into the volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.