Method and apparatus for providing enhanced data verification in a computer system
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United States of America Patent
Stats
-
Jan 3, 1995
Grant Date -
N/A
app pub date -
Jan 7, 1993
filing date -
Jan 7, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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