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Sebastien Bourdeauducq
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Jun 9, 2013
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from migen.fhdl.std import * | ||
from migen.bus.transactions import * | ||
from migen.bus import lasmibus | ||
from migen.sim.generic import Simulator | ||
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def my_generator(n): | ||
for x in range(4): | ||
t = TWrite(4*n+x, 0x100+x) | ||
yield t | ||
print("Wrote in {0} cycle(s)".format(t.latency)) | ||
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for x in range(4): | ||
t = TRead(4*n+x) | ||
yield t | ||
print("Read {0:x} in {1:x} cycle(s)".format(t.data, t.latency)) | ||
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class MyModel(lasmibus.TargetModel): | ||
def read(self, bank, address): | ||
#print("read from bank {0} address {1}".format(bank, address)) | ||
return 0x1000*bank + 0x200+address | ||
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def write(self, bank, address, data, we): | ||
print("write to bank {0} address {1:x} data {2:x}".format(bank, address, data)) | ||
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class TB(Module): | ||
def __init__(self): | ||
self.submodules.controller = lasmibus.Target(MyModel(), aw=4, dw=32, nbanks=4, read_latency=4, write_latency=1) | ||
self.submodules.xbar = lasmibus.Crossbar([self.controller.bus], 4, 2) | ||
self.initiators = [lasmibus.Initiator(my_generator(n), bus) for n, bus in enumerate(self.xbar.masters)] | ||
self.submodules += self.initiators | ||
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def do_simulation(self, s): | ||
s.interrupt = all(m.done for m in self.initiators) | ||
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def main(): | ||
tb = TB() | ||
sim = Simulator(tb) | ||
sim.run() | ||
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main() |