Patent
1995-06-07
1997-08-19
Ellis, Richard L.
G06F 124
Patent
active
056597487
ABSTRACT:
A system for controlling initialization and self test operations in a multiprocessor system facilitates the use of central processing units based around differing microprocessor types. More specifically, the present invention involves storing configuration information, initialization self-test code, and boot code specific to each processor, memory module, or I/O circuit board in non-executable form in a non-volatile memory, on the respective circuit board, and storing the executable portion of the boot code needed by the initial boot processor in a centrally accessible non-volatile memory. Moreover, the present invention provides a system to automatically transfer default system initialization operations from a default processor to a first alternative processor if the default processor fails, and to automatically transfer initialization operations to a second alternative processor if the first alternative processor fails, and so forth depending upon how many alternative processors are installed in the multiprocessor system.
REFERENCES:
patent: 3786433 (1974-01-01), Notley et al.
patent: 4679166 (1987-07-01), Berger et al.
patent: 5497497 (1996-03-01), Miller et al.
National Semiconductor, Memory Databook, 1988, edition, pp. iii, 1-1, 1-4, and 1-181.
AST Research Inc.
Ellis Richard L.
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