12 lines
384 B
Python
12 lines
384 B
Python
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from migen import *
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class PriorityEncoderMSB(Module):
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def __init__(self, width):
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self.i = Signal(width) # one-hot, msb has priority
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self.o = Signal(max=max(2, width)) # binary
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self.n = Signal() # none
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for j in range(width): # first has priority
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self.comb += If(self.i[j], self.o.eq(j))
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self.comb += self.n.eq(self.i == 0)
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