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Network adapter with an indication signal mask and an interrupt signal mask

DC CAFC
  • US 5,530,874 A
  • Filed: 02/02/1993
  • Issued: 06/25/1996
  • Est. Priority Date: 02/02/1993
  • Status: Expired due to Term
First Claim
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1. An apparatus for managing an indication signal supplied by a source of indication signals to present an interrupt signal to a host, comprising:

  • a first mask logic for receiving the indication signal and which selectively masks at least a portion of the indication signal to output an indication value;

    a first memory location, coupled to the first mask logic, for storing the indication value;

    a second mask logic, coupled to the first memory location, for receiving the indication value from said first memory location and which selectively masks at least a portion of the indication value to output an interrupt value;

    a second memory location, coupled to the second mask logic, for storing the interrupt value; and

    interrupt means, coupled to the second memory location and responsive to the interrupt value from said second memory location, for generating the interrupt signal to the host.

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