78 lines
1.9 KiB
Python
78 lines
1.9 KiB
Python
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from migen.fhdl.structure import *
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from migen.bus.asmibus 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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from milkymist import asmicon
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from milkymist.asmicon.bankmachine import _AddressSlicer, _Selector, _Buffer
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from common import SlotsLogger
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sdram_geom = asmicon.GeomSettings(
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bank_a=2,
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row_a=13,
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col_a=10
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)
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def my_generator(dt, offset):
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for t in range(dt):
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yield None
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for x in range(10):
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t = TRead(x + offset)
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yield t
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class Selector:
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def __init__(self, slicer, bankn, slots):
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self.selector = _Selector(slicer, bankn, slots)
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self.queue = []
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def do_simulation(self, s):
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if s.rd(self.selector.stb):
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tag = s.rd(self.selector.tag)
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self.queue.append(tag)
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print("==> SELECTED: " + str(tag))
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print("")
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def get_fragment(self):
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comb = [self.selector.ack.eq(1)]
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return self.selector.get_fragment() + Fragment(comb, sim=[self.do_simulation])
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class Completer:
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def __init__(self, hub, queue):
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self.hub = hub
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self.queue = queue
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def do_simulation(self, s):
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if self.queue:
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tag = self.queue.pop()
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s.wr(self.hub.call, 1)
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s.wr(self.hub.tag_call, tag)
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else:
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s.wr(self.hub.call, 0)
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def get_fragment(self):
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return Fragment(sim=[self.do_simulation])
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def main():
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hub = Hub(12, 128, 8)
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initiators = [Initiator(hub.get_port(), my_generator(0, 2200*(i//6)+i*10))
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for i in range(8)]
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hub.finalize()
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slots = hub.get_slots()
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slicer = _AddressSlicer(sdram_geom, 2)
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logger = SlotsLogger(slicer, slots)
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selector = Selector(slicer, 0, slots)
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completer = Completer(hub, selector.queue)
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def end_simulation(s):
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s.interrupt = all([i.done for i in initiators])
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fragment = hub.get_fragment() + sum([i.get_fragment() for i in initiators], Fragment()) + \
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logger.get_fragment() + selector.get_fragment() + completer.get_fragment() + \
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Fragment(sim=[end_simulation])
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sim = Simulator(fragment, Runner(), TopLevel("my.vcd"))
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sim.run()
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main()
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