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HDL design entry with annotated timing

  • US 5,870,309 A
  • Filed: 11/07/1997
  • Issued: 02/09/1999
  • Est. Priority Date: 09/26/1997
  • Status: Expired due to Term
First Claim
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1. A method for annotating timing information into an HDL description, the method comprising the steps of:

  • a) receiving a command to instantiate a library macro, the instantiation comprising a keyword;

    b) calling a timing annotation procedure in response to the keyword;

    c) retrieving the macro timing information from a speeds file comprising delay information for the macro, the macro timing information comprising delays for the same path through the macro under different operating conditions; and

    d) adding the timing information to the HDL description.

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