Fail-safe EEPROM based rewritable boot system

Details Fail-safe EEPROM based rewritable boot system Fail-safe EEPROM based rewritable boot system

1994-11-17

1995-07-11

Beausoliel, Jr., Robert W.

391 12, G06F 1134, G06F 1100

Patent

active

054329272

ABSTRACT:
A computer boot strap loading system employs dual, separable EEPROM units to facilitate safe reprogramming of bootstrap loader software. Both EEPROMs are adapted for storing bootstrap loading code. One of these two EEPROM areas is designated as the unit for which the code content will govern operation of the next reboot sequence. Circuitry is provided to monitor progress of a reboot to determine if a defect in the presently utilized reboot sequence is provided. Such a defect triggers a reboot from the other EEPROM as well as to provide a back-up copy of the bootstrap loading code most recently determined to be effective.

REFERENCES:
patent: 4070704 (1978-01-01), Calle et al.
patent: 4430704 (1984-02-01), Page et al.
patent: 4597052 (1986-06-01), Matsuda et al.
patent: 4635258 (1987-01-01), Salowe
patent: 4654821 (1987-03-01), Lapp
patent: 4663707 (1987-05-01), Dawson
patent: 4752871 (1988-06-01), Sparks et al.
patent: 4930128 (1990-05-01), Suzuki et al.
patent: 4982404 (1991-01-01), Hartman
patent: 5101490 (1992-03-01), Getson, Jr. et al.
patent: 5155844 (1992-10-01), Cheny et al.
patent: 5210854 (1993-05-01), Beaverton et al.
patent: 5233614 (1993-08-01), Singh
Dialog Printout.
Rosch, Winn, "FlashCard's Flash Memory Delivers Security for Diskless Workstations," PC Magazine, May, 1991, p. 49.
Soja, Richard, "single Chip MCU EEPROM Programming Using Bootstrap Techniques," Electronic Engineering, Oct. 1988, pp. 75-80.
"Research Disclosure Index," Research Disclosure, Jun. 1991 326, p. 427.
"MC68705P3 Advance Information," Motorola Microcomputer, 1984, pp. 3-827-3-850.

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