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actorlib/structuring/Cast: rawbits parameter

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This commit is contained in:
Sebastien Bourdeauducq 2012-06-29 16:10:50 +02:00
parent ed144199fe
commit a49dcb328a
1 changed files with 9 additions and 3 deletions
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12
migen/actorlib/structuring.py
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@ -1,11 +1,17 @@
from migen.fhdl.structure import *
from migen.flow.actor import *
def _rawbits_layout(l):
if isinstance(l, int):
return [("rawbits", BV(l))]
else:
return l
class Cast(CombinatorialActor):
def __init__(self, layout_from, layout_to):
super().__init__(
("sink", Sink, layout_from),
("source", Source, layout_to))
("sink", Sink, _rawbits_layout(layout_from)),
("source", Source, _rawbits_layout(layout_to)))
def get_process_fragment(self):
sigs_from = self.token("sink").flatten()
@ -45,7 +51,7 @@ class Unpack(Actor):
)
]
cases = [(Constant(i, BV(muxbits)) if i else Default(),
Cat(*self.token("source").flatten()).eq(*self.token("sink").subrecord("chunk{0}".format(i)).flatten()))
Cat(*self.token("source").flatten()).eq(Cat(*self.token("sink").subrecord("chunk{0}".format(i)).flatten())))
for i in range(self.n)]
comb.append(Case(mux, *cases))
return Fragment(comb, sync)