Self-testing peripheral-controller system

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Details

371 161, 3642481, 364267, 3642671, 3642674, 3642676, G06F 1200

Patent

active

048856835

ABSTRACT:
A data link processor (peripheral-controller), for managing data transfers to/from multiple disk drive modules, provides a hardware self-test operation to its subsystem card units when it is powered on. The data link processor momentarily disables its interfaces to the peripheral disk drives and the host computer to execute test operations and to indicate either the integrity condition or fault condition of its card units. Each card unit also has a pushbutton for self-test initiation and a local light-emitting diode which lights up and stays lit up if the card unit is misfunctioning to indicate a failed card unit. Further, the connected host computer can initiate the self-test operation for the peripheral-controller for integrity testing.

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