System for the automatic substitution of control firmware embedd

Details System for the automatic substitution of control firmware embedd System for the automatic substitution of control firmware embedd

1995-07-28

1998-02-10

Kim, Matthew M.

395712, 395430, 395489, 395445, G06F 1200, G06F 1300

Patent

active

057178879

ABSTRACT:
A host computer is connected with a computer interface to a disk drive that accepts removable disk drive cartridges. A FLASH memory provides the non-volatile storage of a default embedded control program and an alternative control program for a processor. A special maintenance track on the removable cartridge is accessible by the processor and an alternative program can be uploaded from it and stored in the FLASH memory if a user interlock and the function and revision codes included in the system permit the upload. A fail-safe switch to the embedded default control program is made when problems are experienced with any uploaded program.

REFERENCES:
patent: 4910666 (1990-03-01), Nibby, Jr. et al.
patent: 5313585 (1994-05-01), Jeffries et al.
patent: 5465343 (1995-11-01), Henson et al.
patent: 5537281 (1996-07-01), Ma et al.
patent: 5596738 (1997-01-01), Pope

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