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Circuit board status detection system

  • US 4,578,773 A
  • Filed: 09/27/1983
  • Issued: 03/25/1986
  • Est. Priority Date: 09/27/1983
  • Status: Expired due to Term
First Claim
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1. An electronic system comprising:

  • bus means comprising means for conveying information, including address, data, and control information;

    at least one circuit board coupled to said bus means, said circuit board comprising;

    electronic circuitry for performing a predetermined function;

    means for uniquely identifying said circuit board, said identifying means comprising first and second programmable digital switch means for encoding first and second digital numbers, respectively, said first digital number uniquely identifying the function of said circuitry, and said second digital number uniquely identifying a manufacturing history for said circuit borad;

    status signal generating means responsive to said circuitry for generating a status signal in response to the occurrence of at least one predetermined type of condition existing in said circuitry;

    status signal storage means responsive to said status signal generating means for storing said status signal; and

    reset means coupled to said circuitry for initiating a reset operation of said circuitry; and

    a processing unit coupled to said bus means, said processing unit comprising;

    means for polling said circuit board, said polling means comprising means for reading said first and second digital numbers and means for determining whether said status signal is stored in said status signal storage means; and

    means for generating a command to said reset means, causing a reset operation of said circuitry to be initiated.

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