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Circuit verification accessory

  • US 4,937,827 A
  • Filed: 07/25/1989
  • Issued: 06/26/1990
  • Est. Priority Date: 03/01/1985
  • Status: Expired due to Term
First Claim
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1. In a method of testing proposed electronic circuitry to verify its desired operation, the method comprising the steps:

  • implementing said proposed electronic circuitry by a software model that receives input signals and produces output signals corresponding thereto in accordance with the model;

    exercising said modeled circuitry by operating it in conjunction with second circuitry that is to be associated with the proposed circuitry, said second circuitry being actual electronic circuitry, said exercising including stimulating the actual circuitry with signals in accordance with data generated by the software model and sampling an output signal produced by said actual circuitry in response thereto;

    comparing the results produced by the conjunctive operation of said modeled and actual circuitry with desired results to discover errors in operation of the proposed circuitry;

    an improvement comprising;

    permitting an interval between a stimulation of the actual circuitry by the software model and a sampling of the signal produced by said actual circuitry in response thereto, to be controllably varied.

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