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disconnect unused clk from dff to prevent spurious sanity check fails

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stefan committed 2026-07-05 10:26:37 +09:00
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src/kyupy/sim.py
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@@ -204,6 +204,7 @@ class SimOps:
assert len(n.ins) <= 4, f'Too many input pins for node {n}. Map circuit to KYUPY techlib first using resolve_tlib_cells().' assert len(n.ins) <= 4, f'Too many input pins for node {n}. Map circuit to KYUPY techlib first using resolve_tlib_cells().'
in_idxs = [n.ins[x].index if len(n.ins) > x and n.ins[x] is not None else self.zero_idx for x in [0,1,2,3]] in_idxs = [n.ins[x].index if len(n.ins) > x and n.ins[x] is not None else self.zero_idx for x in [0,1,2,3]]
if n in ppio2idx: if n in ppio2idx:
in_idxs[1] = self.zero_idx
if 'dff' in n.kind.lower() or in_idxs[0] == self.zero_idx: if 'dff' in n.kind.lower() or in_idxs[0] == self.zero_idx:
in_idxs[0] = self.ppi_offset + ppio2idx[n] in_idxs[0] = self.ppi_offset + ppio2idx[n]
else: # this is a PO that is also used within the circuit. Treat as normal fork with ref counting. TODO: check strip_forks=True case for this. else: # this is a PO that is also used within the circuit. Treat as normal fork with ref counting. TODO: check strip_forks=True case for this.