US 5,210,862 AGranted

Bus monitor with selective capture of independently occuring events from multiple sources

AssigneeBull HN Information Systems Inc.

InventorsDouglas J. DeAngelis, Henry W. J. Maddox, Arthur Peters, Donald J. Rathbun, William L. Saltmarsh

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Abstract

A monitor device for selectively detecting and recording conditions at selected points within a system during operation, including a trigger enable memory for storing selectable trigger enabling codes wherein each code corresponds to a trigger signal representing the occurrence of a corresponding condition to be detected, a trigger generation device connected from first selected points and responsive to selected conditions thereupon for generating the trigger signals representing the occurrence of selected conditions, a trigger output device responsive to the enabling codes and the trigger signals for providing trigger outputs upon the occurrence of a trigger signal corresponding to a selected trigger enabling code, and a silo bank memory connected from second selected points and responsive to the trigger outputs for recording conditions present at the second points.

Claims30

Dependent claims

Monitoring means for use in a computer system for selectively detecting and recording conditions at selected points within the system during operation, comprising:

means for storing a plurality of selectable trigger enabling codes, each enabling code corresponding to a trigger signal representing the occurrence of a corresponding condition to be detected,
means connected from a first plurality of selected points within the system and responsive to selected conditions occurring at the first points for generating trigger signals representing the occurrence of corresponding selected conditions,
means responsive to the trigger enabling codes and to the trigger signals for providing trigger outputs upon the occurrence of a trigger signal corresponding to a selected trigger enabling code, and
silo bank means connected from a second plurality of selected points within the system and responsive to the trigger outputs for recording the conditions present at the second points.

1 more element

Dependencies are inferred from the claim text.