28 lines
675 B
Python
28 lines
675 B
Python
from migen.fhdl.structure import *
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from migen.sim.generic import Simulator, TopLevel
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from migen.sim.icarus import Runner
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class Counter:
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def __init__(self):
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self.ce = Signal()
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self.count = Signal(BV(37, True), reset=-5)
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def do_simulation(self, s):
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if s.cycle_counter % 2:
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s.wr(self.ce, 0)
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else:
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s.wr(self.ce, 1)
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print("Cycle: " + str(s.cycle_counter) + " Count: " + str(s.rd(self.count)))
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def get_fragment(self):
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sync = [If(self.ce, self.count.eq(self.count + 1))]
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sim = [self.do_simulation]
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return Fragment(sync=sync, sim=sim)
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def main():
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dut = Counter()
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sim = Simulator(dut.get_fragment(), Runner(), TopLevel("my.vcd"))
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sim.run(20)
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main()
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