52 lines
983 B
Python
52 lines
983 B
Python
import random
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from lib.sata.std import *
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def seed_to_data(seed, random=True):
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if random:
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return (seed * 0x31415979 + 1) & 0xffffffff
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else:
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return seed
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def check(ref, res):
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if isinstance(ref, int):
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return 0, 1, int(ref != res)
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else:
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shift = 0
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while((ref[0] != res[0]) and (len(res)>1)):
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res.pop(0)
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shift += 1
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length = min(len(ref), len(res))
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errors = 0
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for i in range(length):
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if ref.pop(0) != res.pop(0):
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errors += 1
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return shift, length, errors
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def randn(max_n):
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return random.randint(0, max_n-1)
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class AckRandomizer(Module):
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def __init__(self, description, level=0):
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self.level = level
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self.sink = Sink(description)
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self.source = Source(description)
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self.run = Signal()
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self.comb += \
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If(self.run,
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Record.connect(self.sink, self.source)
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).Else(
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self.source.stb.eq(0),
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self.sink.ack.eq(0),
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)
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def do_simulation(self, selfp):
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n = randn(100)
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if n < self.level:
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selfp.run = 0
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else:
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selfp.run = 1
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