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roundrobin: use nmigen zero-width signals

pull/1/head
parent
commit
2bd819fcbe
  1. 20
      heavycomps/heavycomps/roundrobin.py

20
heavycomps/heavycomps/roundrobin.py

@ -9,16 +9,12 @@ class RoundRobin:
def elaborate(self, platform):
m = Module()
n = self.n
if n > 1:
with m.Switch(self.grant):
for i in range(n):
with m.Case(i):
with m.If(~self.request[i]):
for j in reversed(range(i+1, i+n)):
t = j % n
with m.If(self.request[t]):
m.d.sync += self.grant.eq(t)
else:
m.d.comb += self.grant.eq(0)
with m.Switch(self.grant):
for i in range(self.n):
with m.Case(i):
with m.If(~self.request[i]):
for j in reversed(range(i+1, i+self.n)):
t = j % self.n
with m.If(self.request[t]):
m.d.sync += self.grant.eq(t)
return m

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