Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent
1991-10-16
1999-03-02
Robertson, David L.
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
395712, 711103, G06F 1200
Patent
active
058782567
ABSTRACT:
A programmable firmware store for a personal computer system includes a plurality of nonvolatile alterable electronic memories connected in a mutually paralleled circuit arrangement. The memories are connected to a controller that controls the memories to read firmware from and write firmware into the electronic memories, and to write-protect at least one of the memories. Any memory can be write-protected as initially selected by a user or technician of the system. The initial selection can be changed easily to write-protect another of the memories. The firmware in one memory includes code for checking the validity of firmware stored in another memory, and for selecting one or the other of the memories dependent upon a version code of the firmware. The controller also includes an update code for updating the firmware in a selected memory.
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Intel, Memory Products 1991, pp. 6-1 -6-420.
Research Disclosure 31982, Undating Vital Products Data Information in Flash Eprom Without Erasing.
Bealkowski Richard
Begun Ralph Murray
Capps, Jr. Louis Bennie
Abate Joseph P.
International Business Machine Corp.
Johse Bruce D.
LaBau Jeffrey L.
Robertson David L.
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