High reliability computer diagnostics system

Details High reliability computer diagnostics system High reliability computer diagnostics system

1989-10-12

1992-11-10

Atkinson, Charles E.

Excavating

371 161, 371 91, 364DIG1, 3642674, 3642692, G06F 1100, G01R 3128

Patent

active

051630524

ABSTRACT:
In a multiple-board computer system, diagnostics are primarily performed by highly reliable microcontroller units (MCUs) on each processor (and memory) board. Operated separately from the board central processing units so that board failure will not prohibit diagnostic routines, the MCUs are serially connected to a bus separate from the main bus. Redundant diagnostic processor board MCUs constantly monitor the other MCUs and the serial bus, and oversee the operation of an MCUs on a malfunctioning board. In an alternate embodiment the diagnostic processor boards are replaced by a microcomputer serving as a monitor.

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