Fault resilient boot circuit using ring counter

Details Fault resilient boot circuit using ring counter Fault resilient boot circuit using ring counter

1998-05-21

2000-09-19

Lee, Thomas C.

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

Loading initialization program

714 10, G06F 15177, H04L 122

Patent

active

061227358

ABSTRACT:
A fault resilient circuit, having a ring counter, that boots a multi-device system, such as multi-processor computer system. A timer accepts start timer and system operational signals and produces a system fail signal. A ring counter accepts the system fail signal, and the ring counter produces a plurality of device control signals. With such an arrangement, when enabling all of the devices substantially simultaneously does not produce a working system, the boot circuit can for, example, enable all but one of the devices and determine if the system operates correctly with all but one of the devices enabled. If the system does not operate correctly with all but one of the devices enabled, a single device in the system can be enabled and it is determined if the system operates correctly with a single device enabled.

REFERENCES:
patent: 4118688 (1978-10-01), Glennon
patent: 4718002 (1988-01-01), Carr

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