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set a random input data

kamel

hi

did anybody know how to enter a random input data to perform a simulation using spectre (eg 1101...)

thank you

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  • you can use rand_bit_stream from ahdlLib or vsource from analogLib. with vsource its not actually random, you can define the pattern arbitrarily.

    Pattern parameters:
    45      data              The bit string. A string that contains a series of the four states, 1 0 m z.
    46      rptstart=1        The starting bit when repeating. The data repeats from the specified bit to the end of the bit string. The parameter should be an integer from 1 to the length of the bit string.
    47      rpttimes=0        The repeat times. The output will maitain the state of the last bit after the last repeat. If its value is negative, the string repeats forever.
     

Reply

  • you can use rand_bit_stream from ahdlLib or vsource from analogLib. with vsource its not actually random, you can define the pattern arbitrarily.

    Pattern parameters:
    45      data              The bit string. A string that contains a series of the four states, 1 0 m z.
    46      rptstart=1        The starting bit when repeating. The data repeats from the specified bit to the end of the bit string. The parameter should be an integer from 1 to the length of the bit string.
    47      rpttimes=0        The repeat times. The output will maitain the state of the last bit after the last repeat. If its value is negative, the string repeats forever.
     

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