34 lines
804 B
Python
34 lines
804 B
Python
from migen.fhdl.structure import *
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from migen.corelogic.misc import optree
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from migen.bus.simple import Simple
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_desc = [
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(True, "adr", 14),
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(True, "we", 1),
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(True, "dat", 8),
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(False, "dat", 8)
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]
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class Master(Simple):
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def __init__(self):
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Simple.__init__(self, _desc, False)
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class Slave(Simple):
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def __init__(self):
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Simple.__init__(self, _desc, True)
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class Interconnect:
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def __init__(self, master, slaves):
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self.master = master
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self.slaves = slaves
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def get_fragment(self):
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comb = []
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for slave in self.slaves:
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comb.append(slave.adr_i.eq(self.master.adr_o))
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comb.append(slave.we_i.eq(self.master.we_o))
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comb.append(slave.dat_i.eq(self.master.dat_o))
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rb = optree("|", [slave.dat_o for slave in self.slaves])
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comb.append(self.master.dat_i.eq(rb))
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return Fragment(comb)
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